From e0356e8da17a93779a67b04768b52597c126ec0b Mon Sep 17 00:00:00 2001
From: "Ycarus (Yannick Chabanois)" <ycarus@zugaina.org>
Date: Tue, 2 Apr 2024 20:14:02 +0200
Subject: [PATCH] Fix https://github.com/Ysurac/openmptcprouter/issues/3242 -
 dnsmasq nfset config limited in length

---
 .../services/dnsmasq/files/dnsmasq.init       | 1347 +++++++++++++++++
 .../services/dnsmasq/files/dnsmasq.init       | 1347 +++++++++++++++++
 2 files changed, 2694 insertions(+)
 create mode 100755 6.1/package/network/services/dnsmasq/files/dnsmasq.init
 create mode 100755 6.6/package/network/services/dnsmasq/files/dnsmasq.init

diff --git a/6.1/package/network/services/dnsmasq/files/dnsmasq.init b/6.1/package/network/services/dnsmasq/files/dnsmasq.init
new file mode 100755
index 00000000..540da7bb
--- /dev/null
+++ b/6.1/package/network/services/dnsmasq/files/dnsmasq.init
@@ -0,0 +1,1347 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2007-2012 OpenWrt.org
+
+START=19
+
+USE_PROCD=1
+PROG=/usr/sbin/dnsmasq
+
+ADD_LOCAL_DOMAIN=1
+ADD_LOCAL_HOSTNAME=1
+ADD_WAN_FQDN=0
+ADD_LOCAL_FQDN=""
+
+BASECONFIGFILE="/var/etc/dnsmasq.conf"
+BASEHOSTFILE="/tmp/hosts/dhcp"
+TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
+TIMEVALIDFILE="/var/state/dnsmasqsec"
+BASEDHCPSTAMPFILE="/var/run/dnsmasq"
+DHCPBOGUSHOSTNAMEFILE="/usr/share/dnsmasq/dhcpbogushostname.conf"
+RFC6761FILE="/usr/share/dnsmasq/rfc6761.conf"
+DHCPSCRIPT="/usr/lib/dnsmasq/dhcp-script.sh"
+DHCPSCRIPT_DEPENDS="/usr/share/libubox/jshn.sh /usr/bin/jshn /bin/ubus"
+
+DNSMASQ_DHCP_VER=4
+
+dnsmasq_ignore_opt() {
+	local opt="$1"
+
+	if [ -z "$dnsmasq_features" ]; then
+		dnsmasq_features="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
+		[ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp=1
+		[ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6=1
+		[ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec=1
+		[ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp=1
+		[ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset=1
+		[ "${dnsmasq_features#* nftset }" = "$dnsmasq_features" ] || dnsmasq_has_nftset=1
+	fi
+
+	case "$opt" in
+		dhcp-duid|\
+		ra-param)
+			[ -z "$dnsmasq_has_dhcp6" ] ;;
+		dhcp-*|\
+		bootp-*|\
+		pxe-*)
+			[ -z "$dnsmasq_has_dhcp" ] ;;
+		dnssec*|\
+		trust-anchor)
+			if [ -z "$dnsmasq_has_dnssec" ]; then
+				echo "dnsmasq: \"$opt\" requested, but dnssec support is not available" >&2
+				exit 1
+			fi
+			return 1
+			;;
+		tftp-*)
+			[ -z "$dnsmasq_has_tftp" ] ;;
+		ipset)
+			[ -z "$dnsmasq_has_ipset" ] ;;
+		nftset)
+			[ -z "$dnsmasq_has_nftset" ] ;;
+		*)
+			return 1
+	esac
+}
+
+xappend() {
+	local value="${1#--}"
+	local opt="${value%%=*}"
+
+	if ! dnsmasq_ignore_opt "$opt"; then
+		echo "$value" >>$CONFIGFILE_TMP
+	fi
+}
+
+hex_to_hostid() {
+	local var="$1"
+	local hex="${2#0x}" # strip optional "0x" prefix
+
+	if [ -n "${hex//[0-9a-fA-F]/}" ]; then
+		# is invalid hex literal
+		return 1
+	fi
+
+	# convert into host id
+	export "$var=$(
+		printf "%0x:%0x" \
+		$(((0x$hex >> 16) % 65536)) \
+		$(( 0x$hex        % 65536))
+		)"
+
+	return 0
+}
+
+dhcp_calc() {
+	local ip="$1"
+	local res=0
+
+	while [ -n "$ip" ]; do
+		part="${ip%%.*}"
+		res="$(($res * 256))"
+		res="$(($res + $part))"
+		[ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
+	done
+	echo "$res"
+}
+
+dhcp_check() {
+	local ifname="$1"
+	local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
+	local rv=0
+
+	[ -s "$stamp" ] && return $(cat "$stamp")
+
+	# If interface is down, skip it.
+	# The init script will be called again once the link is up
+	case "$(devstatus "$ifname" | jsonfilter -e @.up)" in
+		false) return 1;;
+	esac
+
+	udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
+
+	echo $rv > "$stamp"
+	return $rv
+}
+
+log_once() {
+	pidof dnsmasq >/dev/null || \
+		logger -t dnsmasq "$@"
+}
+
+has_handler() {
+	local file
+
+	for file in /etc/hotplug.d/dhcp/* /etc/hotplug.d/tftp/* /etc/hotplug.d/neigh/*; do
+		[ -f "$file" ] && return 0
+	done
+
+	return 1
+}
+
+append_bool() {
+	local section="$1"
+	local option="$2"
+	local value="$3"
+	local default="$4"
+	local _loctmp
+	[ -z "$default" ] && default="0"
+	config_get_bool _loctmp "$section" "$option" "$default"
+	[ $_loctmp -gt 0 ] && xappend "$value"
+}
+
+append_parm() {
+	local section="$1"
+	local option="$2"
+	local switch="$3"
+	local default="$4"
+	local _loctmp
+	config_get _loctmp "$section" "$option" "$default"
+	[ -z "$_loctmp" ] && return 0
+	xappend "$switch=$_loctmp"
+}
+
+append_server() {
+	xappend "--server=$1"
+}
+
+append_rev_server() {
+	xappend "--rev-server=$1"
+}
+
+append_address() {
+	xappend "--address=$1"
+}
+
+append_connmark_allowlist() {
+	xappend "--connmark-allowlist=$1"
+}
+
+append_interface() {
+	network_get_device ifname "$1" || ifname="$1"
+	xappend "--interface=$ifname"
+}
+
+append_listenaddress() {
+	xappend "--listen-address=$1"
+}
+
+append_notinterface() {
+	network_get_device ifname "$1" || ifname="$1"
+	xappend "--except-interface=$ifname"
+}
+
+ismounted() {
+	local filename="$1"
+	local dirname
+	for dirname in $EXTRA_MOUNT ; do
+		case "$filename" in
+			"${dirname}/"* | "${dirname}" )
+				return 0
+				;;
+		esac
+	done
+
+	return 1
+}
+
+append_extramount() {
+	ismounted "$1" || append EXTRA_MOUNT "$1"
+}
+
+append_addnhosts() {
+	append_extramount "$1"
+	xappend "--addn-hosts=$1"
+}
+
+append_bogusnxdomain() {
+	xappend "--bogus-nxdomain=$1"
+}
+
+append_pxe_service() {
+	xappend "--pxe-service=$1"
+}
+
+append_interface_name() {
+	xappend "--interface-name=$1,$2"
+}
+
+filter_dnsmasq() {
+	local cfg="$1" func="$2" match_cfg="$3" found_cfg
+
+	# use entry when no instance entry set, or if it matches
+	config_get found_cfg "$cfg" "instance"
+	if [ -z "$found_cfg" ] || [ "$found_cfg" = "$match_cfg" ]; then
+		$func $cfg
+	fi
+}
+
+dhcp_subscrid_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get subscriberid "$cfg" subscriberid
+	[ -n "$subscriberid" ] || return 0
+
+	xappend "--dhcp-subscrid=set:$networkid,$subscriberid"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_remoteid_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get remoteid "$cfg" remoteid
+	[ -n "$remoteid" ] || return 0
+
+	xappend "--dhcp-remoteid=set:$networkid,$remoteid"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_circuitid_add() {
+	# TODO: DHCPV6 does not have circuitid; catch "option6:"
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get circuitid "$cfg" circuitid
+	[ -n "$circuitid" ] || return 0
+
+	xappend "--dhcp-circuitid=set:$networkid,$circuitid"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_userclass_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get userclass "$cfg" userclass
+	[ -n "$userclass" ] || return 0
+
+	xappend "--dhcp-userclass=set:$networkid,$userclass"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_vendorclass_add() {
+	# TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get vendorclass "$cfg" vendorclass
+	[ -n "$vendorclass" ] || return 0
+
+	xappend "--dhcp-vendorclass=set:$networkid,$vendorclass"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_match_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get match "$cfg" match
+	[ -n "$match" ] || return 0
+
+	xappend "--dhcp-match=set:$networkid,$match"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_host_add() {
+	local cfg="$1"
+	local hosttag nametime addrs duids macs tags mtags
+
+	config_get_bool force "$cfg" force 0
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
+
+	config_get_bool enable "$cfg" enable 1
+	[ "$enable" = "0" ] && return 0
+
+	config_get name "$cfg" name
+	config_get ip "$cfg" ip
+	config_get hostid "$cfg" hostid
+
+	[ -z "$ip" ] && [ -z "$name" ] && [ -z "$hostid" ] && return 0
+
+	config_get_bool dns "$cfg" dns 0
+	[ "$dns" = "1" ] && [ -n "$ip" ] && [ -n "$name" ] && {
+		echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
+	}
+
+	config_get mac "$cfg" mac
+	config_get duid "$cfg" duid
+	config_get tag "$cfg" tag
+
+	add_tag() {
+		mtags="${mtags}tag:$1,"
+	}
+	config_list_foreach "$cfg" match_tag add_tag
+
+	if [ -n "$mac" ]; then
+		# --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
+		# many MAC are possible to track a laptop ON/OFF dock
+		for m in $mac; do append macs "$m" ","; done
+	fi
+
+	if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ -n "$duid" ]; then
+		# --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
+		# one (virtual) machine gets one DUID per RFC3315
+		duids="id:${duid// */}"
+	fi
+
+	if [ -z "$macs" ] && [ -z "$duids" ]; then
+		# --dhcp-host=lap,192.168.0.199,[::beef]
+		[ -n "$name" ] || return 0
+		macs="$name"
+		name=""
+	fi
+
+	if [ -n "$hostid" ]; then
+		hex_to_hostid hostid "$hostid"
+	fi
+
+	if [ -n "$tag" ]; then
+		for t in $tag; do append tags "$t" ",set:"; done
+	fi
+
+	config_get_bool broadcast "$cfg" broadcast 0
+	config_get leasetime "$cfg" leasetime
+
+	[ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
+
+	hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
+	nametime="${name:+,$name}${leasetime:+,$leasetime}"
+
+	if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
+		addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
+		xappend "--dhcp-host=$mtags$macs${duids:+,$duids}$hosttag$addrs$nametime"
+	else
+		xappend "--dhcp-host=$mtags$macs$hosttag${ip:+,$ip}$nametime"
+	fi
+}
+
+dhcp_this_host_add() {
+	local net="$1"
+	local ifname="$2"
+	local mode="$3"
+	local routerstub routername ifdashname
+	local lanaddr lanaddr6 lanaddrs6 ulaprefix
+
+	if [ "$mode" -gt 0 ] ; then
+		ifdashname="${ifname//./-}"
+		routerstub="$( md5sum /etc/os-release )"
+		routerstub="router-${routerstub// */}"
+		routername="$( uci_get system @system[0] hostname $routerstub )"
+
+		if [ "$mode" -gt 1 ] ; then
+			if [ "$mode" -gt 2 ] ; then
+				if [ "$mode" -gt 3 ] ; then
+					append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
+				fi
+
+				append_interface_name "$routername.$DOMAIN" "$ifname"
+			fi
+
+			# All IP addresses discovered by dnsmasq will be labeled (except fe80::)
+			append_interface_name "$routername" "$ifname"
+
+		else
+			# This uses a static host file entry for only limited addresses.
+			# Use dnsmasq option "--expandhosts" to enable FQDN on host files.
+			ulaprefix="$(uci_get network @globals[0] ula_prefix)"
+			network_get_ipaddr lanaddr "$net"
+			network_get_ipaddrs6 lanaddrs6 "$net"
+
+			if [ -n "$lanaddr" ] ; then
+				dhcp_domain_add "" "$routername" "$lanaddr"
+			fi
+
+			if [ -n "$ulaprefix" ] && [ -n "$lanaddrs6" ] ; then
+				for lanaddr6 in $lanaddrs6 ; do
+					case "$lanaddr6" in
+					"${ulaprefix%%:/*}"*)
+						dhcp_domain_add "" "$routername" "$lanaddr6"
+						;;
+					esac
+				done
+			fi
+		fi
+	fi
+}
+
+dhcp_tag_add() {
+	# NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
+	local cfg="$1"
+
+	tag="$cfg"
+
+	[ -n "$tag" ] || return 0
+
+	config_get_bool force "$cfg" force 0
+	[ "$force" = "0" ] && force=
+
+	config_get option "$cfg" dhcp_option
+	for o in $option; do
+		xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
+	done
+}
+
+dhcp_mac_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get mac "$cfg" mac
+	[ -n "$mac" ] || return 0
+
+	xappend "--dhcp-mac=$networkid,$mac"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_boot_add() {
+	# TODO: BOOTURL is different between DHCPv4 and DHCPv6
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+
+	config_get filename "$cfg" filename
+	[ -n "$filename" ] || return 0
+
+	config_get servername "$cfg" servername
+	config_get serveraddress "$cfg" serveraddress
+
+	[ -n "$serveraddress" ] && [ ! -n "$servername" ] && return 0
+
+	xappend "--dhcp-boot=${networkid:+tag:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_add() {
+	local cfg="$1"
+	local dhcp6range="::"
+	local nettag
+	local tags
+
+	config_get net "$cfg" interface
+	[ -n "$net" ] || return 0
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || networkid="$net"
+
+	network_get_device ifname "$net" || return 0
+
+	[ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
+		DNS_SERVERS="$DNS_SERVERS $dnsserver"
+	}
+
+	append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
+		# Many ISP do not have useful names for DHCP customers (your WAN).
+		dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
+		return 0
+	}
+
+	network_get_subnet subnet "$net" || return 0
+	network_get_protocol proto "$net" || return 0
+
+	# Do not support non-static interfaces for now
+	[ static = "$proto" ] || return 0
+
+	ipaddr="${subnet%%/*}"
+	prefix_or_netmask="${subnet##*/}"
+
+	# Override interface netmask with dhcp config if applicable
+	config_get netmask "$cfg" netmask
+
+	[ -n "$netmask" ] && prefix_or_netmask="$netmask"
+
+	#check for an already active dhcp server on the interface, unless 'force' is set
+	config_get_bool force "$cfg" force 0
+	[ $force -gt 0 ] || dhcp_check "$ifname" || {
+		logger -t dnsmasq \
+			"found already running DHCP-server on interface '$ifname'" \
+			"refusing to start, use 'option force 1' to override"
+		return 0
+	}
+
+	config_get start "$cfg" start 100
+	config_get limit "$cfg" limit 150
+	config_get leasetime "$cfg" leasetime 12h
+	config_get options "$cfg" options
+	config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
+	config_get_bool dynamicdhcpv4 "$cfg" dynamicdhcpv4 $dynamicdhcp
+	config_get_bool dynamicdhcpv6 "$cfg" dynamicdhcpv6 $dynamicdhcp
+
+	config_get dhcpv4 "$cfg" dhcpv4
+	config_get dhcpv6 "$cfg" dhcpv6
+
+	config_get ra "$cfg" ra
+	config_get ra_management "$cfg" ra_management
+	config_get ra_preference "$cfg" ra_preference
+	config_get dns "$cfg" dns
+	config_get dns_sl "$cfg" domain
+
+	config_list_foreach "$cfg" "interface_name" append_interface_name "$ifname"
+
+	# Put the router host name on this DHCP served interface address(es)
+	dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
+
+	start="$( dhcp_calc "$start" )"
+
+	add_tag() {
+		tags="${tags}tag:$1,"
+	}
+	config_list_foreach "$cfg" tag add_tag
+
+	nettag="${networkid:+set:${networkid},}"
+
+	# make sure the DHCP range is not empty
+	if [ "$dhcpv4" != "disabled" ] && ipcalc "$ipaddr/$prefix_or_netmask" "$start" "$limit" ; then
+		[ "$dynamicdhcpv4" = "0" ] && END="static"
+
+		xappend "--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
+	fi
+
+	if [ "$dynamicdhcpv6" = "0" ] ; then
+		dhcp6range="::,static"
+	else
+		dhcp6range="::1000,::ffff"
+	fi
+
+
+	if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ "$ra" = "server" ] ; then
+		# Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
+		# and let some other machine(s) send RA pointing to it.
+
+		case $ra_preference in
+		*high*)
+			xappend "--ra-param=$ifname,high,0,7200"
+			;;
+		*low*)
+			xappend "--ra-param=$ifname,low,0,7200"
+			;;
+		*)
+			# Send UNSOLICITED RA at default interval and live for 2 hours.
+			# TODO: convert flexible lease time into route life time (only seconds).
+			xappend "--ra-param=$ifname,0,7200"
+			;;
+		esac
+
+		if [ "$dhcpv6" = "disabled" ] ; then
+			ra_management="3"
+		fi
+
+
+		case $ra_management in
+		0)
+			# SLACC with DCHP for extended options
+			xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
+			;;
+		2)
+			# DHCP address and RA only for management redirection
+			xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
+			;;
+		3)
+			# SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
+			xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
+			;;
+		*)
+			# SLAAC and full DHCP
+			xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
+			;;
+		esac
+
+		if [ -n "$dns" ]; then
+			dnss=""
+			for d in $dns; do append dnss "[$d]" ","; done
+		else
+			dnss="[::]"
+		fi
+
+		dhcp_option_append "option6:dns-server,$dnss" "$networkid"
+
+		if [ -n "$dns_sl" ]; then
+			ddssl=""
+			for dd in $dns_sl; do append ddssl "$dd" ","; done
+		fi
+
+		dhcp_option_append "option6:domain-search,$ddssl" "$networkid"
+	fi
+
+	dhcp_option_add "$cfg" "$networkid" 0
+	dhcp_option_add "$cfg" "$networkid" 2
+}
+
+dhcp_option_append() {
+	local option="$1"
+	local networkid="$2"
+	local force="$3"
+
+	xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
+}
+
+dhcp_option_add() {
+	# NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
+	local cfg="$1"
+	local networkid="$2"
+	local force="$3"
+	local opt="dhcp_option"
+
+	[ "$force" = "0" ] && force=
+	[ "$force" = "2" ] && opt="dhcp_option_force"
+
+	local list_len
+	config_get list_len "$cfg" "${opt}_LENGTH"
+
+	if [ -n "$list_len" ]; then
+		config_list_foreach "$cfg" "$opt" dhcp_option_append "$networkid" "$force"
+	else
+		config_get dhcp_option "$cfg" "$opt"
+
+		[ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
+
+		local option
+		for option in $dhcp_option; do
+			dhcp_option_append "$option" "$networkid" "$force"
+		done
+	fi
+}
+
+dhcp_domain_add() {
+	local cfg="$1"
+	local ip name names record
+
+	config_get names "$cfg" name "$2"
+	[ -n "$names" ] || return 0
+
+	config_get ip "$cfg" ip "$3"
+	[ -n "$ip" ] || return 0
+
+	for name in $names; do
+		record="${record:+$record }$name"
+	done
+
+	echo "$ip $record" >> $HOSTFILE_TMP
+}
+
+dhcp_srv_add() {
+	local cfg="$1"
+
+	config_get srv "$cfg" srv
+	[ -n "$srv" ] || return 0
+
+	config_get target "$cfg" target
+	[ -n "$target" ] || return 0
+
+	config_get port "$cfg" port
+	[ -n "$port" ] || return 0
+
+	config_get class "$cfg" class
+	config_get weight "$cfg" weight
+
+	local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
+
+	xappend "--srv-host=$service"
+}
+
+dhcp_mx_add() {
+	local cfg="$1"
+	local domain relay pref
+
+	config_get domain "$cfg" domain
+	[ -n "$domain" ] || return 0
+
+	config_get relay "$cfg" relay
+	[ -n "$relay" ] || return 0
+
+	config_get pref "$cfg" pref 0
+
+	local service="$domain,$relay,$pref"
+
+	xappend "--mx-host=$service"
+}
+
+dhcp_cname_add() {
+	local cfg="$1"
+	local cname target
+
+	config_get cname "$cfg" cname
+	[ -n "$cname" ] || return 0
+
+	config_get target "$cfg" target
+	[ -n "$target" ] || return 0
+
+	xappend "--cname=${cname},${target}"
+}
+
+dhcp_hostrecord_add() {
+	local cfg="$1"
+	local names addresses record val
+
+	config_get names "$cfg" name "$2"
+	if [ -z "$names" ]; then
+		return 0
+	fi
+
+	config_get addresses "$cfg" ip "$3"
+	if [ -z "$addresses" ]; then
+		return 0
+	fi
+
+	for val in $names $addresses; do
+		record="${record:+$record,}$val"
+	done
+
+	xappend "--host-record=$record"
+}
+
+dhcp_relay_add() {
+	local cfg="$1"
+	local local_addr server_addr interface
+
+	config_get local_addr "$cfg" local_addr
+	[ -n "$local_addr" ] || return 0
+
+	config_get server_addr "$cfg" server_addr
+	[ -n "$server_addr" ] || return 0
+
+	config_get interface "$cfg" interface
+	if [ -z "$interface" ]; then
+		xappend "--dhcp-relay=$local_addr,$server_addr"
+	else
+		network_get_device ifname "$interface" || return
+		xappend "--dhcp-relay=$local_addr,$server_addr,$ifname"
+	fi
+}
+
+dnsmasq_ipset_add() {
+	local cfg="$1"
+	local ipsets nftsets domains
+
+	add_ipset() {
+		ipsets="${ipsets:+$ipsets,}$1"
+	}
+
+	add_nftset() {
+		local IFS=,
+		for set in $1; do
+			local fam="$family"
+			[ -n "$fam" ] || fam=$(echo "$set" | sed -nre \
+				's#^.*[^0-9]([46])$|^.*[-_]([46])[-_].*$|^([46])[^0-9].*$#\1\2\3#p')
+			[ -n "$fam" ] || \
+				fam=$(nft -t list set "$table_family" "$table" "$set" 2>&1 | sed -nre \
+				's#^\t\ttype .*\bipv([46])_addr\b.*$#\1#p')
+
+			[ -n "$fam" ] || \
+				logger -t dnsmasq "Cannot infer address family from non-existent nftables set '$set'"
+
+			nftsets="${nftsets:+$nftsets,}${fam:+$fam#}$table_family#$table#$set"
+		done
+	}
+
+	add_domain() {
+		# leading '/' is expected
+		domains="$domains/$1"
+		if [ "$(echo $domains | wc -m)" -gt 600 ]; then
+			xappend "--ipset=$domains/$ipsets"
+			xappend "--nftset=$domains/$nftsets"
+			domains=""
+		fi
+	}
+
+	config_get table "$cfg" table 'fw4'
+	config_get table_family "$cfg" table_family 'inet'
+	if [ "$table_family" = "ip" ] ; then
+		family="4"
+	elif [ "$table_family" = "ip6" ] ; then
+		family="6"
+	else
+		config_get family "$cfg" family
+	fi
+
+	config_list_foreach "$cfg" "name" add_ipset
+	config_list_foreach "$cfg" "name" add_nftset
+	config_list_foreach "$cfg" "domain" add_domain
+
+	if [ -z "$ipsets" ] || [ -z "$nftsets" ] || [ -z "$domains" ]; then
+		return 0
+	fi
+
+	xappend "--ipset=$domains/$ipsets"
+	xappend "--nftset=$domains/$nftsets"
+}
+
+dnsmasq_start()
+{
+	local cfg="$1"
+	local disabled user_dhcpscript logfacility
+	local resolvfile resolvdir localuse=1
+
+	config_get_bool disabled "$cfg" disabled 0
+	[ "$disabled" -gt 0 ] && return 0
+
+	# reset list of DOMAINS, DNS servers and EXTRA mounts (for each dnsmasq instance)
+	DNS_SERVERS=""
+	DOMAIN=""
+	EXTRA_MOUNT=""
+	CONFIGFILE="${BASECONFIGFILE}.${cfg}"
+	CONFIGFILE_TMP="${CONFIGFILE}.$$"
+	HOSTFILE="${BASEHOSTFILE}.${cfg}"
+	HOSTFILE_TMP="${HOSTFILE}.$$"
+	HOSTFILE_DIR="$(dirname "$HOSTFILE")"
+	BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
+
+	# before we can call xappend
+	umask u=rwx,g=rx,o=rx
+	mkdir -p /var/run/dnsmasq/
+	mkdir -p $(dirname $CONFIGFILE)
+	mkdir -p "$HOSTFILE_DIR"
+	mkdir -p /var/lib/misc
+	chown dnsmasq:dnsmasq /var/run/dnsmasq
+
+	echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
+	echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
+
+	local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
+	if [ ! -r "$dnsmasqconffile" ]; then
+		dnsmasqconffile=/etc/dnsmasq.conf
+	fi
+
+	# if we did this last, we could override auto-generated config
+	[ -f "${dnsmasqconffile}" ] && {
+		xappend "--conf-file=${dnsmasqconffile}"
+	}
+
+	$PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
+
+
+	if [ -x /usr/sbin/odhcpd ] && [ -x /etc/init.d/odhcpd ] ; then
+		local odhcpd_is_main odhcpd_is_enabled
+		config_get odhcpd_is_main odhcpd maindhcp 0
+		/etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
+
+
+		if [ "$odhcpd_is_enabled" -eq 0 ] && [ "$DHCPv6CAPABLE" -eq 1 ] ; then
+			# DHCP V4 and V6 in DNSMASQ
+			DNSMASQ_DHCP_VER=6
+		elif [ "$odhcpd_is_main" -gt 0 ] ; then
+			# ODHCPD is doing it all
+			DNSMASQ_DHCP_VER=0
+		else
+			# You have ODHCPD but use DNSMASQ for DHCPV4
+			DNSMASQ_DHCP_VER=4
+		fi
+
+	elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
+		# DHCP V4 and V6 in DNSMASQ
+		DNSMASQ_DHCP_VER=6
+	else
+		DNSMASQ_DHCP_VER=4
+	fi
+
+	# Allow DHCP/DHCPv6 to be handled by ISC DHCPD
+	if [ -x /usr/sbin/dhcpd ] ; then
+		if [ -x /etc/init.d/dhcpd ] ; then
+			/etc/init.d/dhcpd enabled && DNSMASQ_DHCP_VER=0
+		fi
+		if [ -x /etc/init.d/dhcpd6 ] && [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
+			/etc/init.d/dhcpd6 enabled && DNSMASQ_DHCP_VER=4
+		fi
+	fi
+
+	append_bool "$cfg" authoritative "--dhcp-authoritative"
+	append_bool "$cfg" nodaemon "--no-daemon"
+	append_bool "$cfg" domainneeded "--domain-needed"
+	append_bool "$cfg" filterwin2k "--filterwin2k"
+	append_bool "$cfg" nohosts "--no-hosts"
+	append_bool "$cfg" nonegcache "--no-negcache"
+	append_bool "$cfg" strictorder "--strict-order"
+	append_bool "$cfg" logqueries "--log-queries=extra"
+	append_bool "$cfg" noresolv "--no-resolv"
+	append_bool "$cfg" localise_queries "--localise-queries"
+	append_bool "$cfg" readethers "--read-ethers"
+
+	local instance_name="dnsmasq.$cfg"
+	if [ "$cfg" = "$DEFAULT_INSTANCE" ]; then
+		instance_name="dnsmasq"
+	fi
+	config_get_bool dbus "$cfg" "dbus" 0
+	[ $dbus -gt 0 ] && xappend "--enable-dbus=uk.org.thekelleys.$instance_name"
+	config_get_bool ubus "$cfg" "ubus" 1
+	[ $ubus -gt 0 ] && xappend "--enable-ubus=$instance_name"
+
+	append_bool "$cfg" expandhosts "--expand-hosts"
+	config_get tftp_root "$cfg" "tftp_root"
+	[ -n "$tftp_root" ] && mkdir -p "$tftp_root" && append_bool "$cfg" enable_tftp "--enable-tftp"
+	append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
+	append_bool "$cfg" nonwildcard "--bind-dynamic" 1
+	append_bool "$cfg" fqdn "--dhcp-fqdn"
+	append_bool "$cfg" proxydnssec "--proxy-dnssec"
+	append_bool "$cfg" localservice "--local-service"
+	append_bool "$cfg" logdhcp "--log-dhcp"
+	append_bool "$cfg" quietdhcp "--quiet-dhcp"
+	append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
+	append_bool "$cfg" allservers "--all-servers"
+	append_bool "$cfg" noping "--no-ping"
+	append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
+	append_bool "$cfg" scriptarp "--script-arp"
+
+	append_bool "$cfg" filter_aaaa "--filter-AAAA"
+	append_bool "$cfg" filter_a "--filter-A"
+
+	append_parm "$cfg" logfacility "--log-facility"
+	config_get logfacility "$cfg" "logfacility"
+	append_parm "$cfg" cachesize "--cache-size"
+	append_parm "$cfg" dnsforwardmax "--dns-forward-max"
+	append_parm "$cfg" port "--port"
+	append_parm "$cfg" ednspacket_max "--edns-packet-max"
+	append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
+	append_parm "$cfg" "queryport" "--query-port"
+	append_parm "$cfg" "minport" "--min-port"
+	append_parm "$cfg" "maxport" "--max-port"
+	append_parm "$cfg" "domain" "--domain"
+	append_parm "$cfg" "local" "--local"
+	config_list_foreach "$cfg" "listen_address" append_listenaddress
+	config_list_foreach "$cfg" "server" append_server
+	config_list_foreach "$cfg" "rev_server" append_rev_server
+	config_list_foreach "$cfg" "address" append_address
+
+	local connmark_allowlist_enable
+	config_get connmark_allowlist_enable "$cfg" connmark_allowlist_enable 0
+	[ "$connmark_allowlist_enable" -gt 0 ] && {
+		append_parm "$cfg" "connmark_allowlist_enable" "--connmark-allowlist-enable"
+		config_list_foreach "$cfg" "connmark_allowlist" append_connmark_allowlist
+	}
+
+	[ -n "$BOOT" ] || {
+		config_list_foreach "$cfg" "interface" append_interface
+		config_list_foreach "$cfg" "notinterface" append_notinterface
+	}
+	config_get_bool ignore_hosts_dir "$cfg" ignore_hosts_dir 0
+	if [ "$ignore_hosts_dir" = "1" ]; then
+		xappend "--addn-hosts=$HOSTFILE"
+		append EXTRA_MOUNT "$HOSTFILE"
+	else
+		xappend "--addn-hosts=$HOSTFILE_DIR"
+		append EXTRA_MOUNT "$HOSTFILE_DIR"
+	fi
+	config_list_foreach "$cfg" "addnhosts" append_addnhosts
+	config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
+	append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
+
+	local serversfile
+	config_get serversfile "$cfg" "serversfile"
+	[ -n "$serversfile" ] && {
+		xappend "--servers-file=$serversfile"
+		append EXTRA_MOUNT "$serversfile"
+	}
+
+	append_parm "$cfg" "tftp_root" "--tftp-root"
+	append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
+	append_parm "$cfg" "local_ttl" "--local-ttl"
+	append_parm "$cfg" "max_ttl" "--max-ttl"
+	append_parm "$cfg" "min_cache_ttl" "--min-cache-ttl"
+	append_parm "$cfg" "max_cache_ttl" "--max-cache-ttl"
+	append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
+	append_parm "$cfg" "tftp_unique_root" "--tftp-unique-root"
+	config_list_foreach "$cfg" "pxe_service" append_pxe_service
+	config_get DOMAIN "$cfg" domain
+
+	config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
+	config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
+	config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
+	config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
+
+	if [ -z "$ADD_LOCAL_FQDN" ] ; then
+		# maintain support for previous UCI
+		ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
+	fi
+
+	config_get user_dhcpscript $cfg dhcpscript
+	if has_handler || [ -n "$user_dhcpscript" ]; then
+		xappend "--dhcp-script=$DHCPSCRIPT"
+		xappend "--script-arp"
+	fi
+
+	config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
+	[ -n "$leasefile" ] && [ ! -e "$leasefile" ] && touch "$leasefile"
+	config_get_bool cachelocal "$cfg" cachelocal 1
+
+	config_get_bool noresolv "$cfg" noresolv 0
+	if [ "$noresolv" != "1" ]; then
+		config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.d/resolv.conf.auto
+		[ -n "$resolvfile" ] && [ ! -e "$resolvfile" ] && touch "$resolvfile"
+		xappend "--resolv-file=$resolvfile"
+		[ "$resolvfile" != "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=0
+		resolvdir="$(dirname "$resolvfile")"
+	fi
+	config_get_bool localuse "$cfg" localuse "$localuse"
+
+	config_get hostsfile "$cfg" dhcphostsfile
+	[ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
+
+	local rebind
+	config_get_bool rebind "$cfg" rebind_protection 1
+	[ $rebind -gt 0 ] && {
+		log_once \
+			"DNS rebinding protection is active," \
+			"will discard upstream RFC1918 responses!"
+		xappend "--stop-dns-rebind"
+
+		local rebind_localhost
+		config_get_bool rebind_localhost "$cfg" rebind_localhost 0
+		[ $rebind_localhost -gt 0 ] && {
+			log_once "Allowing 127.0.0.0/8 responses"
+			xappend "--rebind-localhost-ok"
+		}
+
+		append_rebind_domain() {
+			log_once "Allowing RFC1918 responses for domain $1"
+			xappend "--rebind-domain-ok=$1"
+		}
+
+		config_list_foreach "$cfg" rebind_domain append_rebind_domain
+	}
+
+	config_get_bool dnssec "$cfg" dnssec 0
+	[ "$dnssec" -gt 0 ] && {
+		xappend "--conf-file=$TRUSTANCHORSFILE"
+		xappend "--dnssec"
+		[ -x /etc/init.d/sysntpd ] && {
+			if /etc/init.d/sysntpd enabled || [ "$(uci_get system.ntp.enabled)" = "1" ] ; then
+				[ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
+			fi
+		}
+		config_get_bool dnsseccheckunsigned "$cfg" dnsseccheckunsigned 1
+		[ "$dnsseccheckunsigned" -eq 0 ] && xappend "--dnssec-check-unsigned=no"
+	}
+
+	config_get addmac "$cfg" addmac 0
+	[ "$addmac" != "0" ] && {
+		[ "$addmac" = "1" ] && addmac=
+		xappend "--add-mac${addmac:+="$addmac"}"
+	}
+
+	dhcp_option_add "$cfg" "" 0
+	dhcp_option_add "$cfg" "" 2
+
+	xappend "--dhcp-broadcast=tag:needs-broadcast"
+
+
+	config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
+	xappend "--conf-dir=$dnsmasqconfdir"
+	dnsmasqconfdir="${dnsmasqconfdir%%,*}"
+	[ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
+	xappend "--user=dnsmasq"
+	xappend "--group=dnsmasq"
+	echo >> $CONFIGFILE_TMP
+
+	config_get_bool enable_tftp "$cfg" enable_tftp 0
+	[ "$enable_tftp" -gt 0 ] && {
+		config_get tftp_root "$cfg" tftp_root
+		append EXTRA_MOUNT $tftp_root
+	}
+
+	config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	config_get_bool dhcpbogushostname "$cfg" dhcpbogushostname 1
+	[ "$dhcpbogushostname" -gt 0 ] && {
+		xappend "--dhcp-ignore-names=tag:dhcp_bogus_hostname"
+		[ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend "--conf-file=$DHCPBOGUSHOSTNAMEFILE"
+	}
+
+	config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
+	config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
+	config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
+	config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
+	config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
+	config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
+	config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
+	config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
+	config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
+	config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
+	config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
+	[ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
+
+	echo >> $CONFIGFILE_TMP
+	config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
+	config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	config_get_bool boguspriv "$cfg" boguspriv 1
+	[ "$boguspriv" -gt 0 ] && {
+		xappend "--bogus-priv"
+		[ -r "$RFC6761FILE" ] && xappend "--conf-file=$RFC6761FILE"
+	}
+
+	if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
+		# Enable RA feature for when/if it is constructed,
+		# and RA is selected per interface pool (RA, DHCP, or both),
+		# but no one (should) want RA broadcast in syslog
+		[ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
+		xappend "--enable-ra"
+		xappend "--quiet-ra"
+		append_bool "$cfg" quietdhcp "--quiet-dhcp6"
+
+	elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
+		[ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
+	fi
+
+
+	echo >> $CONFIGFILE_TMP
+	config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	echo >> $CONFIGFILE_TMP
+	config_foreach filter_dnsmasq ipset dnsmasq_ipset_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	mv -f $CONFIGFILE_TMP $CONFIGFILE
+	mv -f $HOSTFILE_TMP $HOSTFILE
+
+	[ "$localuse" -gt 0 ] && {
+		rm -f /tmp/resolv.conf
+		[ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
+			echo "search $DOMAIN" >> /tmp/resolv.conf
+		}
+		DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
+		[ -e /proc/sys/net/ipv6 ] && DNS_SERVERS="$DNS_SERVERS ::1"
+		for DNS_SERVER in $DNS_SERVERS ; do
+			echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
+		done
+	}
+
+	config_list_foreach "$cfg" addnmount append_extramount
+
+	procd_open_instance $cfg
+	procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
+	procd_set_param file $CONFIGFILE
+	[ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
+	procd_set_param respawn
+
+	local instance_ifc instance_netdev
+	config_get instance_ifc "$cfg" interface
+	[ -n "$instance_ifc" ] && network_get_device instance_netdev "$instance_ifc" &&
+		[ -n "$instance_netdev" ] && procd_set_param netdev $instance_netdev
+
+	procd_add_jail dnsmasq ubus log
+	procd_add_jail_mount $CONFIGFILE $DHCPBOGUSHOSTNAMEFILE $DHCPSCRIPT $DHCPSCRIPT_DEPENDS
+	procd_add_jail_mount $EXTRA_MOUNT $RFC6761FILE $TRUSTANCHORSFILE
+	procd_add_jail_mount $dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript
+	procd_add_jail_mount /etc/passwd /etc/group /etc/TZ /etc/hosts /etc/ethers
+	procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
+	case "$logfacility" in */*)
+		[ ! -e "$logfacility" ] && touch "$logfacility"
+		procd_add_jail_mount_rw "$logfacility"
+	esac
+	[ -e "$hostsfile" ] && procd_add_jail_mount $hostsfile
+
+	procd_close_instance
+}
+
+dnsmasq_stop()
+{
+	local cfg="$1"
+	local noresolv resolvfile localuse=1
+
+	config_get_bool noresolv "$cfg" noresolv 0
+	config_get resolvfile "$cfg" "resolvfile"
+
+	[ "$noresolv" = 0 ] && [ "$resolvfile" != "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=0
+	config_get_bool localuse "$cfg" localuse "$localuse"
+	[ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp/resolv.conf
+
+	rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
+}
+
+add_interface_trigger()
+{
+	local interface ifname ignore
+
+	config_get interface "$1" interface
+	config_get_bool ignore "$1" ignore 0
+	network_get_device ifname "$interface" || ignore=0
+
+	[ -n "$interface" ] && [ $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/dnsmasq reload
+}
+
+service_triggers()
+{
+	procd_add_reload_trigger "dhcp" "system"
+
+	config_load dhcp
+	config_foreach add_interface_trigger dhcp
+	config_foreach add_interface_trigger relay
+}
+
+boot()
+{
+	BOOT=1
+	start "$@"
+}
+
+start_service() {
+	local instance="$1"
+	local instance_found=0
+	local first_instance=""
+
+	. /lib/functions/network.sh
+
+	config_cb() {
+		local type="$1"
+		local name="$2"
+		if [ "$type" = "dnsmasq" ]; then
+			if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
+				instance_found=1
+			fi
+			if [ -z "$DEFAULT_INSTANCE" ]; then
+				local disabled
+				config_get_bool disabled "$name" disabled 0
+				if [ "$disabled" -eq 0 ]; then
+					# First enabled section will be assigned default instance name.
+					# Unnamed sections get precedence over named sections.
+					if expr "$cfg" : 'cfg[0-9a-f]*$' >/dev/null = "9"; then # See uci_fixup_section.
+						DEFAULT_INSTANCE="$name" # Unnamed config section.
+					elif [ -z "$first_instance" ]; then
+						first_instance="$name"
+					fi
+				fi
+			fi
+		fi
+	}
+
+	DEFAULT_INSTANCE=""
+	config_load dhcp
+	if [ -z "$DEFAULT_INSTANCE" ]; then
+		DEFAULT_INSTANCE="$first_instance" # No unnamed config section was found.
+	fi
+
+	if [ -n "$instance" ]; then
+		[ "$instance_found" -gt 0 ] || return
+		dnsmasq_start "$instance"
+	else
+		config_foreach dnsmasq_start dnsmasq
+	fi
+}
+
+reload_service() {
+	rc_procd start_service "$@"
+	procd_send_signal dnsmasq "$@"
+}
+
+stop_service() {
+	local instance="$1"
+	local instance_found=0
+
+	config_cb() {
+		local type="$1"
+		local name="$2"
+		if [ "$type" = "dnsmasq" ]; then
+			if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
+				instance_found=1
+			fi
+		fi
+	}
+
+	config_load dhcp
+
+	if [ -n "$instance" ]; then
+		[ "$instance_found" -gt 0 ] || return
+		dnsmasq_stop "$instance"
+	else
+		config_foreach dnsmasq_stop dnsmasq
+	fi
+}
diff --git a/6.6/package/network/services/dnsmasq/files/dnsmasq.init b/6.6/package/network/services/dnsmasq/files/dnsmasq.init
new file mode 100755
index 00000000..540da7bb
--- /dev/null
+++ b/6.6/package/network/services/dnsmasq/files/dnsmasq.init
@@ -0,0 +1,1347 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2007-2012 OpenWrt.org
+
+START=19
+
+USE_PROCD=1
+PROG=/usr/sbin/dnsmasq
+
+ADD_LOCAL_DOMAIN=1
+ADD_LOCAL_HOSTNAME=1
+ADD_WAN_FQDN=0
+ADD_LOCAL_FQDN=""
+
+BASECONFIGFILE="/var/etc/dnsmasq.conf"
+BASEHOSTFILE="/tmp/hosts/dhcp"
+TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
+TIMEVALIDFILE="/var/state/dnsmasqsec"
+BASEDHCPSTAMPFILE="/var/run/dnsmasq"
+DHCPBOGUSHOSTNAMEFILE="/usr/share/dnsmasq/dhcpbogushostname.conf"
+RFC6761FILE="/usr/share/dnsmasq/rfc6761.conf"
+DHCPSCRIPT="/usr/lib/dnsmasq/dhcp-script.sh"
+DHCPSCRIPT_DEPENDS="/usr/share/libubox/jshn.sh /usr/bin/jshn /bin/ubus"
+
+DNSMASQ_DHCP_VER=4
+
+dnsmasq_ignore_opt() {
+	local opt="$1"
+
+	if [ -z "$dnsmasq_features" ]; then
+		dnsmasq_features="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
+		[ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp=1
+		[ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6=1
+		[ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec=1
+		[ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp=1
+		[ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset=1
+		[ "${dnsmasq_features#* nftset }" = "$dnsmasq_features" ] || dnsmasq_has_nftset=1
+	fi
+
+	case "$opt" in
+		dhcp-duid|\
+		ra-param)
+			[ -z "$dnsmasq_has_dhcp6" ] ;;
+		dhcp-*|\
+		bootp-*|\
+		pxe-*)
+			[ -z "$dnsmasq_has_dhcp" ] ;;
+		dnssec*|\
+		trust-anchor)
+			if [ -z "$dnsmasq_has_dnssec" ]; then
+				echo "dnsmasq: \"$opt\" requested, but dnssec support is not available" >&2
+				exit 1
+			fi
+			return 1
+			;;
+		tftp-*)
+			[ -z "$dnsmasq_has_tftp" ] ;;
+		ipset)
+			[ -z "$dnsmasq_has_ipset" ] ;;
+		nftset)
+			[ -z "$dnsmasq_has_nftset" ] ;;
+		*)
+			return 1
+	esac
+}
+
+xappend() {
+	local value="${1#--}"
+	local opt="${value%%=*}"
+
+	if ! dnsmasq_ignore_opt "$opt"; then
+		echo "$value" >>$CONFIGFILE_TMP
+	fi
+}
+
+hex_to_hostid() {
+	local var="$1"
+	local hex="${2#0x}" # strip optional "0x" prefix
+
+	if [ -n "${hex//[0-9a-fA-F]/}" ]; then
+		# is invalid hex literal
+		return 1
+	fi
+
+	# convert into host id
+	export "$var=$(
+		printf "%0x:%0x" \
+		$(((0x$hex >> 16) % 65536)) \
+		$(( 0x$hex        % 65536))
+		)"
+
+	return 0
+}
+
+dhcp_calc() {
+	local ip="$1"
+	local res=0
+
+	while [ -n "$ip" ]; do
+		part="${ip%%.*}"
+		res="$(($res * 256))"
+		res="$(($res + $part))"
+		[ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
+	done
+	echo "$res"
+}
+
+dhcp_check() {
+	local ifname="$1"
+	local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
+	local rv=0
+
+	[ -s "$stamp" ] && return $(cat "$stamp")
+
+	# If interface is down, skip it.
+	# The init script will be called again once the link is up
+	case "$(devstatus "$ifname" | jsonfilter -e @.up)" in
+		false) return 1;;
+	esac
+
+	udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
+
+	echo $rv > "$stamp"
+	return $rv
+}
+
+log_once() {
+	pidof dnsmasq >/dev/null || \
+		logger -t dnsmasq "$@"
+}
+
+has_handler() {
+	local file
+
+	for file in /etc/hotplug.d/dhcp/* /etc/hotplug.d/tftp/* /etc/hotplug.d/neigh/*; do
+		[ -f "$file" ] && return 0
+	done
+
+	return 1
+}
+
+append_bool() {
+	local section="$1"
+	local option="$2"
+	local value="$3"
+	local default="$4"
+	local _loctmp
+	[ -z "$default" ] && default="0"
+	config_get_bool _loctmp "$section" "$option" "$default"
+	[ $_loctmp -gt 0 ] && xappend "$value"
+}
+
+append_parm() {
+	local section="$1"
+	local option="$2"
+	local switch="$3"
+	local default="$4"
+	local _loctmp
+	config_get _loctmp "$section" "$option" "$default"
+	[ -z "$_loctmp" ] && return 0
+	xappend "$switch=$_loctmp"
+}
+
+append_server() {
+	xappend "--server=$1"
+}
+
+append_rev_server() {
+	xappend "--rev-server=$1"
+}
+
+append_address() {
+	xappend "--address=$1"
+}
+
+append_connmark_allowlist() {
+	xappend "--connmark-allowlist=$1"
+}
+
+append_interface() {
+	network_get_device ifname "$1" || ifname="$1"
+	xappend "--interface=$ifname"
+}
+
+append_listenaddress() {
+	xappend "--listen-address=$1"
+}
+
+append_notinterface() {
+	network_get_device ifname "$1" || ifname="$1"
+	xappend "--except-interface=$ifname"
+}
+
+ismounted() {
+	local filename="$1"
+	local dirname
+	for dirname in $EXTRA_MOUNT ; do
+		case "$filename" in
+			"${dirname}/"* | "${dirname}" )
+				return 0
+				;;
+		esac
+	done
+
+	return 1
+}
+
+append_extramount() {
+	ismounted "$1" || append EXTRA_MOUNT "$1"
+}
+
+append_addnhosts() {
+	append_extramount "$1"
+	xappend "--addn-hosts=$1"
+}
+
+append_bogusnxdomain() {
+	xappend "--bogus-nxdomain=$1"
+}
+
+append_pxe_service() {
+	xappend "--pxe-service=$1"
+}
+
+append_interface_name() {
+	xappend "--interface-name=$1,$2"
+}
+
+filter_dnsmasq() {
+	local cfg="$1" func="$2" match_cfg="$3" found_cfg
+
+	# use entry when no instance entry set, or if it matches
+	config_get found_cfg "$cfg" "instance"
+	if [ -z "$found_cfg" ] || [ "$found_cfg" = "$match_cfg" ]; then
+		$func $cfg
+	fi
+}
+
+dhcp_subscrid_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get subscriberid "$cfg" subscriberid
+	[ -n "$subscriberid" ] || return 0
+
+	xappend "--dhcp-subscrid=set:$networkid,$subscriberid"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_remoteid_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get remoteid "$cfg" remoteid
+	[ -n "$remoteid" ] || return 0
+
+	xappend "--dhcp-remoteid=set:$networkid,$remoteid"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_circuitid_add() {
+	# TODO: DHCPV6 does not have circuitid; catch "option6:"
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get circuitid "$cfg" circuitid
+	[ -n "$circuitid" ] || return 0
+
+	xappend "--dhcp-circuitid=set:$networkid,$circuitid"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_userclass_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get userclass "$cfg" userclass
+	[ -n "$userclass" ] || return 0
+
+	xappend "--dhcp-userclass=set:$networkid,$userclass"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_vendorclass_add() {
+	# TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get vendorclass "$cfg" vendorclass
+	[ -n "$vendorclass" ] || return 0
+
+	xappend "--dhcp-vendorclass=set:$networkid,$vendorclass"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_match_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get match "$cfg" match
+	[ -n "$match" ] || return 0
+
+	xappend "--dhcp-match=set:$networkid,$match"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_host_add() {
+	local cfg="$1"
+	local hosttag nametime addrs duids macs tags mtags
+
+	config_get_bool force "$cfg" force 0
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
+
+	config_get_bool enable "$cfg" enable 1
+	[ "$enable" = "0" ] && return 0
+
+	config_get name "$cfg" name
+	config_get ip "$cfg" ip
+	config_get hostid "$cfg" hostid
+
+	[ -z "$ip" ] && [ -z "$name" ] && [ -z "$hostid" ] && return 0
+
+	config_get_bool dns "$cfg" dns 0
+	[ "$dns" = "1" ] && [ -n "$ip" ] && [ -n "$name" ] && {
+		echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
+	}
+
+	config_get mac "$cfg" mac
+	config_get duid "$cfg" duid
+	config_get tag "$cfg" tag
+
+	add_tag() {
+		mtags="${mtags}tag:$1,"
+	}
+	config_list_foreach "$cfg" match_tag add_tag
+
+	if [ -n "$mac" ]; then
+		# --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
+		# many MAC are possible to track a laptop ON/OFF dock
+		for m in $mac; do append macs "$m" ","; done
+	fi
+
+	if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ -n "$duid" ]; then
+		# --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
+		# one (virtual) machine gets one DUID per RFC3315
+		duids="id:${duid// */}"
+	fi
+
+	if [ -z "$macs" ] && [ -z "$duids" ]; then
+		# --dhcp-host=lap,192.168.0.199,[::beef]
+		[ -n "$name" ] || return 0
+		macs="$name"
+		name=""
+	fi
+
+	if [ -n "$hostid" ]; then
+		hex_to_hostid hostid "$hostid"
+	fi
+
+	if [ -n "$tag" ]; then
+		for t in $tag; do append tags "$t" ",set:"; done
+	fi
+
+	config_get_bool broadcast "$cfg" broadcast 0
+	config_get leasetime "$cfg" leasetime
+
+	[ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
+
+	hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
+	nametime="${name:+,$name}${leasetime:+,$leasetime}"
+
+	if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
+		addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
+		xappend "--dhcp-host=$mtags$macs${duids:+,$duids}$hosttag$addrs$nametime"
+	else
+		xappend "--dhcp-host=$mtags$macs$hosttag${ip:+,$ip}$nametime"
+	fi
+}
+
+dhcp_this_host_add() {
+	local net="$1"
+	local ifname="$2"
+	local mode="$3"
+	local routerstub routername ifdashname
+	local lanaddr lanaddr6 lanaddrs6 ulaprefix
+
+	if [ "$mode" -gt 0 ] ; then
+		ifdashname="${ifname//./-}"
+		routerstub="$( md5sum /etc/os-release )"
+		routerstub="router-${routerstub// */}"
+		routername="$( uci_get system @system[0] hostname $routerstub )"
+
+		if [ "$mode" -gt 1 ] ; then
+			if [ "$mode" -gt 2 ] ; then
+				if [ "$mode" -gt 3 ] ; then
+					append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
+				fi
+
+				append_interface_name "$routername.$DOMAIN" "$ifname"
+			fi
+
+			# All IP addresses discovered by dnsmasq will be labeled (except fe80::)
+			append_interface_name "$routername" "$ifname"
+
+		else
+			# This uses a static host file entry for only limited addresses.
+			# Use dnsmasq option "--expandhosts" to enable FQDN on host files.
+			ulaprefix="$(uci_get network @globals[0] ula_prefix)"
+			network_get_ipaddr lanaddr "$net"
+			network_get_ipaddrs6 lanaddrs6 "$net"
+
+			if [ -n "$lanaddr" ] ; then
+				dhcp_domain_add "" "$routername" "$lanaddr"
+			fi
+
+			if [ -n "$ulaprefix" ] && [ -n "$lanaddrs6" ] ; then
+				for lanaddr6 in $lanaddrs6 ; do
+					case "$lanaddr6" in
+					"${ulaprefix%%:/*}"*)
+						dhcp_domain_add "" "$routername" "$lanaddr6"
+						;;
+					esac
+				done
+			fi
+		fi
+	fi
+}
+
+dhcp_tag_add() {
+	# NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
+	local cfg="$1"
+
+	tag="$cfg"
+
+	[ -n "$tag" ] || return 0
+
+	config_get_bool force "$cfg" force 0
+	[ "$force" = "0" ] && force=
+
+	config_get option "$cfg" dhcp_option
+	for o in $option; do
+		xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
+	done
+}
+
+dhcp_mac_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get mac "$cfg" mac
+	[ -n "$mac" ] || return 0
+
+	xappend "--dhcp-mac=$networkid,$mac"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_boot_add() {
+	# TODO: BOOTURL is different between DHCPv4 and DHCPv6
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+
+	config_get filename "$cfg" filename
+	[ -n "$filename" ] || return 0
+
+	config_get servername "$cfg" servername
+	config_get serveraddress "$cfg" serveraddress
+
+	[ -n "$serveraddress" ] && [ ! -n "$servername" ] && return 0
+
+	xappend "--dhcp-boot=${networkid:+tag:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
+
+	config_get_bool force "$cfg" force 0
+
+	dhcp_option_add "$cfg" "$networkid" "$force"
+}
+
+dhcp_add() {
+	local cfg="$1"
+	local dhcp6range="::"
+	local nettag
+	local tags
+
+	config_get net "$cfg" interface
+	[ -n "$net" ] || return 0
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || networkid="$net"
+
+	network_get_device ifname "$net" || return 0
+
+	[ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
+		DNS_SERVERS="$DNS_SERVERS $dnsserver"
+	}
+
+	append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
+		# Many ISP do not have useful names for DHCP customers (your WAN).
+		dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
+		return 0
+	}
+
+	network_get_subnet subnet "$net" || return 0
+	network_get_protocol proto "$net" || return 0
+
+	# Do not support non-static interfaces for now
+	[ static = "$proto" ] || return 0
+
+	ipaddr="${subnet%%/*}"
+	prefix_or_netmask="${subnet##*/}"
+
+	# Override interface netmask with dhcp config if applicable
+	config_get netmask "$cfg" netmask
+
+	[ -n "$netmask" ] && prefix_or_netmask="$netmask"
+
+	#check for an already active dhcp server on the interface, unless 'force' is set
+	config_get_bool force "$cfg" force 0
+	[ $force -gt 0 ] || dhcp_check "$ifname" || {
+		logger -t dnsmasq \
+			"found already running DHCP-server on interface '$ifname'" \
+			"refusing to start, use 'option force 1' to override"
+		return 0
+	}
+
+	config_get start "$cfg" start 100
+	config_get limit "$cfg" limit 150
+	config_get leasetime "$cfg" leasetime 12h
+	config_get options "$cfg" options
+	config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
+	config_get_bool dynamicdhcpv4 "$cfg" dynamicdhcpv4 $dynamicdhcp
+	config_get_bool dynamicdhcpv6 "$cfg" dynamicdhcpv6 $dynamicdhcp
+
+	config_get dhcpv4 "$cfg" dhcpv4
+	config_get dhcpv6 "$cfg" dhcpv6
+
+	config_get ra "$cfg" ra
+	config_get ra_management "$cfg" ra_management
+	config_get ra_preference "$cfg" ra_preference
+	config_get dns "$cfg" dns
+	config_get dns_sl "$cfg" domain
+
+	config_list_foreach "$cfg" "interface_name" append_interface_name "$ifname"
+
+	# Put the router host name on this DHCP served interface address(es)
+	dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
+
+	start="$( dhcp_calc "$start" )"
+
+	add_tag() {
+		tags="${tags}tag:$1,"
+	}
+	config_list_foreach "$cfg" tag add_tag
+
+	nettag="${networkid:+set:${networkid},}"
+
+	# make sure the DHCP range is not empty
+	if [ "$dhcpv4" != "disabled" ] && ipcalc "$ipaddr/$prefix_or_netmask" "$start" "$limit" ; then
+		[ "$dynamicdhcpv4" = "0" ] && END="static"
+
+		xappend "--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
+	fi
+
+	if [ "$dynamicdhcpv6" = "0" ] ; then
+		dhcp6range="::,static"
+	else
+		dhcp6range="::1000,::ffff"
+	fi
+
+
+	if [ $DNSMASQ_DHCP_VER -eq 6 ] && [ "$ra" = "server" ] ; then
+		# Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
+		# and let some other machine(s) send RA pointing to it.
+
+		case $ra_preference in
+		*high*)
+			xappend "--ra-param=$ifname,high,0,7200"
+			;;
+		*low*)
+			xappend "--ra-param=$ifname,low,0,7200"
+			;;
+		*)
+			# Send UNSOLICITED RA at default interval and live for 2 hours.
+			# TODO: convert flexible lease time into route life time (only seconds).
+			xappend "--ra-param=$ifname,0,7200"
+			;;
+		esac
+
+		if [ "$dhcpv6" = "disabled" ] ; then
+			ra_management="3"
+		fi
+
+
+		case $ra_management in
+		0)
+			# SLACC with DCHP for extended options
+			xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
+			;;
+		2)
+			# DHCP address and RA only for management redirection
+			xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
+			;;
+		3)
+			# SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
+			xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
+			;;
+		*)
+			# SLAAC and full DHCP
+			xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
+			;;
+		esac
+
+		if [ -n "$dns" ]; then
+			dnss=""
+			for d in $dns; do append dnss "[$d]" ","; done
+		else
+			dnss="[::]"
+		fi
+
+		dhcp_option_append "option6:dns-server,$dnss" "$networkid"
+
+		if [ -n "$dns_sl" ]; then
+			ddssl=""
+			for dd in $dns_sl; do append ddssl "$dd" ","; done
+		fi
+
+		dhcp_option_append "option6:domain-search,$ddssl" "$networkid"
+	fi
+
+	dhcp_option_add "$cfg" "$networkid" 0
+	dhcp_option_add "$cfg" "$networkid" 2
+}
+
+dhcp_option_append() {
+	local option="$1"
+	local networkid="$2"
+	local force="$3"
+
+	xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
+}
+
+dhcp_option_add() {
+	# NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
+	local cfg="$1"
+	local networkid="$2"
+	local force="$3"
+	local opt="dhcp_option"
+
+	[ "$force" = "0" ] && force=
+	[ "$force" = "2" ] && opt="dhcp_option_force"
+
+	local list_len
+	config_get list_len "$cfg" "${opt}_LENGTH"
+
+	if [ -n "$list_len" ]; then
+		config_list_foreach "$cfg" "$opt" dhcp_option_append "$networkid" "$force"
+	else
+		config_get dhcp_option "$cfg" "$opt"
+
+		[ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
+
+		local option
+		for option in $dhcp_option; do
+			dhcp_option_append "$option" "$networkid" "$force"
+		done
+	fi
+}
+
+dhcp_domain_add() {
+	local cfg="$1"
+	local ip name names record
+
+	config_get names "$cfg" name "$2"
+	[ -n "$names" ] || return 0
+
+	config_get ip "$cfg" ip "$3"
+	[ -n "$ip" ] || return 0
+
+	for name in $names; do
+		record="${record:+$record }$name"
+	done
+
+	echo "$ip $record" >> $HOSTFILE_TMP
+}
+
+dhcp_srv_add() {
+	local cfg="$1"
+
+	config_get srv "$cfg" srv
+	[ -n "$srv" ] || return 0
+
+	config_get target "$cfg" target
+	[ -n "$target" ] || return 0
+
+	config_get port "$cfg" port
+	[ -n "$port" ] || return 0
+
+	config_get class "$cfg" class
+	config_get weight "$cfg" weight
+
+	local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
+
+	xappend "--srv-host=$service"
+}
+
+dhcp_mx_add() {
+	local cfg="$1"
+	local domain relay pref
+
+	config_get domain "$cfg" domain
+	[ -n "$domain" ] || return 0
+
+	config_get relay "$cfg" relay
+	[ -n "$relay" ] || return 0
+
+	config_get pref "$cfg" pref 0
+
+	local service="$domain,$relay,$pref"
+
+	xappend "--mx-host=$service"
+}
+
+dhcp_cname_add() {
+	local cfg="$1"
+	local cname target
+
+	config_get cname "$cfg" cname
+	[ -n "$cname" ] || return 0
+
+	config_get target "$cfg" target
+	[ -n "$target" ] || return 0
+
+	xappend "--cname=${cname},${target}"
+}
+
+dhcp_hostrecord_add() {
+	local cfg="$1"
+	local names addresses record val
+
+	config_get names "$cfg" name "$2"
+	if [ -z "$names" ]; then
+		return 0
+	fi
+
+	config_get addresses "$cfg" ip "$3"
+	if [ -z "$addresses" ]; then
+		return 0
+	fi
+
+	for val in $names $addresses; do
+		record="${record:+$record,}$val"
+	done
+
+	xappend "--host-record=$record"
+}
+
+dhcp_relay_add() {
+	local cfg="$1"
+	local local_addr server_addr interface
+
+	config_get local_addr "$cfg" local_addr
+	[ -n "$local_addr" ] || return 0
+
+	config_get server_addr "$cfg" server_addr
+	[ -n "$server_addr" ] || return 0
+
+	config_get interface "$cfg" interface
+	if [ -z "$interface" ]; then
+		xappend "--dhcp-relay=$local_addr,$server_addr"
+	else
+		network_get_device ifname "$interface" || return
+		xappend "--dhcp-relay=$local_addr,$server_addr,$ifname"
+	fi
+}
+
+dnsmasq_ipset_add() {
+	local cfg="$1"
+	local ipsets nftsets domains
+
+	add_ipset() {
+		ipsets="${ipsets:+$ipsets,}$1"
+	}
+
+	add_nftset() {
+		local IFS=,
+		for set in $1; do
+			local fam="$family"
+			[ -n "$fam" ] || fam=$(echo "$set" | sed -nre \
+				's#^.*[^0-9]([46])$|^.*[-_]([46])[-_].*$|^([46])[^0-9].*$#\1\2\3#p')
+			[ -n "$fam" ] || \
+				fam=$(nft -t list set "$table_family" "$table" "$set" 2>&1 | sed -nre \
+				's#^\t\ttype .*\bipv([46])_addr\b.*$#\1#p')
+
+			[ -n "$fam" ] || \
+				logger -t dnsmasq "Cannot infer address family from non-existent nftables set '$set'"
+
+			nftsets="${nftsets:+$nftsets,}${fam:+$fam#}$table_family#$table#$set"
+		done
+	}
+
+	add_domain() {
+		# leading '/' is expected
+		domains="$domains/$1"
+		if [ "$(echo $domains | wc -m)" -gt 600 ]; then
+			xappend "--ipset=$domains/$ipsets"
+			xappend "--nftset=$domains/$nftsets"
+			domains=""
+		fi
+	}
+
+	config_get table "$cfg" table 'fw4'
+	config_get table_family "$cfg" table_family 'inet'
+	if [ "$table_family" = "ip" ] ; then
+		family="4"
+	elif [ "$table_family" = "ip6" ] ; then
+		family="6"
+	else
+		config_get family "$cfg" family
+	fi
+
+	config_list_foreach "$cfg" "name" add_ipset
+	config_list_foreach "$cfg" "name" add_nftset
+	config_list_foreach "$cfg" "domain" add_domain
+
+	if [ -z "$ipsets" ] || [ -z "$nftsets" ] || [ -z "$domains" ]; then
+		return 0
+	fi
+
+	xappend "--ipset=$domains/$ipsets"
+	xappend "--nftset=$domains/$nftsets"
+}
+
+dnsmasq_start()
+{
+	local cfg="$1"
+	local disabled user_dhcpscript logfacility
+	local resolvfile resolvdir localuse=1
+
+	config_get_bool disabled "$cfg" disabled 0
+	[ "$disabled" -gt 0 ] && return 0
+
+	# reset list of DOMAINS, DNS servers and EXTRA mounts (for each dnsmasq instance)
+	DNS_SERVERS=""
+	DOMAIN=""
+	EXTRA_MOUNT=""
+	CONFIGFILE="${BASECONFIGFILE}.${cfg}"
+	CONFIGFILE_TMP="${CONFIGFILE}.$$"
+	HOSTFILE="${BASEHOSTFILE}.${cfg}"
+	HOSTFILE_TMP="${HOSTFILE}.$$"
+	HOSTFILE_DIR="$(dirname "$HOSTFILE")"
+	BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
+
+	# before we can call xappend
+	umask u=rwx,g=rx,o=rx
+	mkdir -p /var/run/dnsmasq/
+	mkdir -p $(dirname $CONFIGFILE)
+	mkdir -p "$HOSTFILE_DIR"
+	mkdir -p /var/lib/misc
+	chown dnsmasq:dnsmasq /var/run/dnsmasq
+
+	echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
+	echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
+
+	local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
+	if [ ! -r "$dnsmasqconffile" ]; then
+		dnsmasqconffile=/etc/dnsmasq.conf
+	fi
+
+	# if we did this last, we could override auto-generated config
+	[ -f "${dnsmasqconffile}" ] && {
+		xappend "--conf-file=${dnsmasqconffile}"
+	}
+
+	$PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
+
+
+	if [ -x /usr/sbin/odhcpd ] && [ -x /etc/init.d/odhcpd ] ; then
+		local odhcpd_is_main odhcpd_is_enabled
+		config_get odhcpd_is_main odhcpd maindhcp 0
+		/etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
+
+
+		if [ "$odhcpd_is_enabled" -eq 0 ] && [ "$DHCPv6CAPABLE" -eq 1 ] ; then
+			# DHCP V4 and V6 in DNSMASQ
+			DNSMASQ_DHCP_VER=6
+		elif [ "$odhcpd_is_main" -gt 0 ] ; then
+			# ODHCPD is doing it all
+			DNSMASQ_DHCP_VER=0
+		else
+			# You have ODHCPD but use DNSMASQ for DHCPV4
+			DNSMASQ_DHCP_VER=4
+		fi
+
+	elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
+		# DHCP V4 and V6 in DNSMASQ
+		DNSMASQ_DHCP_VER=6
+	else
+		DNSMASQ_DHCP_VER=4
+	fi
+
+	# Allow DHCP/DHCPv6 to be handled by ISC DHCPD
+	if [ -x /usr/sbin/dhcpd ] ; then
+		if [ -x /etc/init.d/dhcpd ] ; then
+			/etc/init.d/dhcpd enabled && DNSMASQ_DHCP_VER=0
+		fi
+		if [ -x /etc/init.d/dhcpd6 ] && [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
+			/etc/init.d/dhcpd6 enabled && DNSMASQ_DHCP_VER=4
+		fi
+	fi
+
+	append_bool "$cfg" authoritative "--dhcp-authoritative"
+	append_bool "$cfg" nodaemon "--no-daemon"
+	append_bool "$cfg" domainneeded "--domain-needed"
+	append_bool "$cfg" filterwin2k "--filterwin2k"
+	append_bool "$cfg" nohosts "--no-hosts"
+	append_bool "$cfg" nonegcache "--no-negcache"
+	append_bool "$cfg" strictorder "--strict-order"
+	append_bool "$cfg" logqueries "--log-queries=extra"
+	append_bool "$cfg" noresolv "--no-resolv"
+	append_bool "$cfg" localise_queries "--localise-queries"
+	append_bool "$cfg" readethers "--read-ethers"
+
+	local instance_name="dnsmasq.$cfg"
+	if [ "$cfg" = "$DEFAULT_INSTANCE" ]; then
+		instance_name="dnsmasq"
+	fi
+	config_get_bool dbus "$cfg" "dbus" 0
+	[ $dbus -gt 0 ] && xappend "--enable-dbus=uk.org.thekelleys.$instance_name"
+	config_get_bool ubus "$cfg" "ubus" 1
+	[ $ubus -gt 0 ] && xappend "--enable-ubus=$instance_name"
+
+	append_bool "$cfg" expandhosts "--expand-hosts"
+	config_get tftp_root "$cfg" "tftp_root"
+	[ -n "$tftp_root" ] && mkdir -p "$tftp_root" && append_bool "$cfg" enable_tftp "--enable-tftp"
+	append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
+	append_bool "$cfg" nonwildcard "--bind-dynamic" 1
+	append_bool "$cfg" fqdn "--dhcp-fqdn"
+	append_bool "$cfg" proxydnssec "--proxy-dnssec"
+	append_bool "$cfg" localservice "--local-service"
+	append_bool "$cfg" logdhcp "--log-dhcp"
+	append_bool "$cfg" quietdhcp "--quiet-dhcp"
+	append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
+	append_bool "$cfg" allservers "--all-servers"
+	append_bool "$cfg" noping "--no-ping"
+	append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
+	append_bool "$cfg" scriptarp "--script-arp"
+
+	append_bool "$cfg" filter_aaaa "--filter-AAAA"
+	append_bool "$cfg" filter_a "--filter-A"
+
+	append_parm "$cfg" logfacility "--log-facility"
+	config_get logfacility "$cfg" "logfacility"
+	append_parm "$cfg" cachesize "--cache-size"
+	append_parm "$cfg" dnsforwardmax "--dns-forward-max"
+	append_parm "$cfg" port "--port"
+	append_parm "$cfg" ednspacket_max "--edns-packet-max"
+	append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
+	append_parm "$cfg" "queryport" "--query-port"
+	append_parm "$cfg" "minport" "--min-port"
+	append_parm "$cfg" "maxport" "--max-port"
+	append_parm "$cfg" "domain" "--domain"
+	append_parm "$cfg" "local" "--local"
+	config_list_foreach "$cfg" "listen_address" append_listenaddress
+	config_list_foreach "$cfg" "server" append_server
+	config_list_foreach "$cfg" "rev_server" append_rev_server
+	config_list_foreach "$cfg" "address" append_address
+
+	local connmark_allowlist_enable
+	config_get connmark_allowlist_enable "$cfg" connmark_allowlist_enable 0
+	[ "$connmark_allowlist_enable" -gt 0 ] && {
+		append_parm "$cfg" "connmark_allowlist_enable" "--connmark-allowlist-enable"
+		config_list_foreach "$cfg" "connmark_allowlist" append_connmark_allowlist
+	}
+
+	[ -n "$BOOT" ] || {
+		config_list_foreach "$cfg" "interface" append_interface
+		config_list_foreach "$cfg" "notinterface" append_notinterface
+	}
+	config_get_bool ignore_hosts_dir "$cfg" ignore_hosts_dir 0
+	if [ "$ignore_hosts_dir" = "1" ]; then
+		xappend "--addn-hosts=$HOSTFILE"
+		append EXTRA_MOUNT "$HOSTFILE"
+	else
+		xappend "--addn-hosts=$HOSTFILE_DIR"
+		append EXTRA_MOUNT "$HOSTFILE_DIR"
+	fi
+	config_list_foreach "$cfg" "addnhosts" append_addnhosts
+	config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
+	append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
+
+	local serversfile
+	config_get serversfile "$cfg" "serversfile"
+	[ -n "$serversfile" ] && {
+		xappend "--servers-file=$serversfile"
+		append EXTRA_MOUNT "$serversfile"
+	}
+
+	append_parm "$cfg" "tftp_root" "--tftp-root"
+	append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
+	append_parm "$cfg" "local_ttl" "--local-ttl"
+	append_parm "$cfg" "max_ttl" "--max-ttl"
+	append_parm "$cfg" "min_cache_ttl" "--min-cache-ttl"
+	append_parm "$cfg" "max_cache_ttl" "--max-cache-ttl"
+	append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
+	append_parm "$cfg" "tftp_unique_root" "--tftp-unique-root"
+	config_list_foreach "$cfg" "pxe_service" append_pxe_service
+	config_get DOMAIN "$cfg" domain
+
+	config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
+	config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
+	config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
+	config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
+
+	if [ -z "$ADD_LOCAL_FQDN" ] ; then
+		# maintain support for previous UCI
+		ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
+	fi
+
+	config_get user_dhcpscript $cfg dhcpscript
+	if has_handler || [ -n "$user_dhcpscript" ]; then
+		xappend "--dhcp-script=$DHCPSCRIPT"
+		xappend "--script-arp"
+	fi
+
+	config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
+	[ -n "$leasefile" ] && [ ! -e "$leasefile" ] && touch "$leasefile"
+	config_get_bool cachelocal "$cfg" cachelocal 1
+
+	config_get_bool noresolv "$cfg" noresolv 0
+	if [ "$noresolv" != "1" ]; then
+		config_get resolvfile "$cfg" resolvfile /tmp/resolv.conf.d/resolv.conf.auto
+		[ -n "$resolvfile" ] && [ ! -e "$resolvfile" ] && touch "$resolvfile"
+		xappend "--resolv-file=$resolvfile"
+		[ "$resolvfile" != "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=0
+		resolvdir="$(dirname "$resolvfile")"
+	fi
+	config_get_bool localuse "$cfg" localuse "$localuse"
+
+	config_get hostsfile "$cfg" dhcphostsfile
+	[ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
+
+	local rebind
+	config_get_bool rebind "$cfg" rebind_protection 1
+	[ $rebind -gt 0 ] && {
+		log_once \
+			"DNS rebinding protection is active," \
+			"will discard upstream RFC1918 responses!"
+		xappend "--stop-dns-rebind"
+
+		local rebind_localhost
+		config_get_bool rebind_localhost "$cfg" rebind_localhost 0
+		[ $rebind_localhost -gt 0 ] && {
+			log_once "Allowing 127.0.0.0/8 responses"
+			xappend "--rebind-localhost-ok"
+		}
+
+		append_rebind_domain() {
+			log_once "Allowing RFC1918 responses for domain $1"
+			xappend "--rebind-domain-ok=$1"
+		}
+
+		config_list_foreach "$cfg" rebind_domain append_rebind_domain
+	}
+
+	config_get_bool dnssec "$cfg" dnssec 0
+	[ "$dnssec" -gt 0 ] && {
+		xappend "--conf-file=$TRUSTANCHORSFILE"
+		xappend "--dnssec"
+		[ -x /etc/init.d/sysntpd ] && {
+			if /etc/init.d/sysntpd enabled || [ "$(uci_get system.ntp.enabled)" = "1" ] ; then
+				[ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
+			fi
+		}
+		config_get_bool dnsseccheckunsigned "$cfg" dnsseccheckunsigned 1
+		[ "$dnsseccheckunsigned" -eq 0 ] && xappend "--dnssec-check-unsigned=no"
+	}
+
+	config_get addmac "$cfg" addmac 0
+	[ "$addmac" != "0" ] && {
+		[ "$addmac" = "1" ] && addmac=
+		xappend "--add-mac${addmac:+="$addmac"}"
+	}
+
+	dhcp_option_add "$cfg" "" 0
+	dhcp_option_add "$cfg" "" 2
+
+	xappend "--dhcp-broadcast=tag:needs-broadcast"
+
+
+	config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
+	xappend "--conf-dir=$dnsmasqconfdir"
+	dnsmasqconfdir="${dnsmasqconfdir%%,*}"
+	[ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
+	xappend "--user=dnsmasq"
+	xappend "--group=dnsmasq"
+	echo >> $CONFIGFILE_TMP
+
+	config_get_bool enable_tftp "$cfg" enable_tftp 0
+	[ "$enable_tftp" -gt 0 ] && {
+		config_get tftp_root "$cfg" tftp_root
+		append EXTRA_MOUNT $tftp_root
+	}
+
+	config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	config_get_bool dhcpbogushostname "$cfg" dhcpbogushostname 1
+	[ "$dhcpbogushostname" -gt 0 ] && {
+		xappend "--dhcp-ignore-names=tag:dhcp_bogus_hostname"
+		[ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend "--conf-file=$DHCPBOGUSHOSTNAMEFILE"
+	}
+
+	config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
+	config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
+	config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
+	config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
+	config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
+	config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
+	config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
+	config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
+	config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
+	config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
+	config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
+	[ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
+
+	echo >> $CONFIGFILE_TMP
+	config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
+	config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	config_get_bool boguspriv "$cfg" boguspriv 1
+	[ "$boguspriv" -gt 0 ] && {
+		xappend "--bogus-priv"
+		[ -r "$RFC6761FILE" ] && xappend "--conf-file=$RFC6761FILE"
+	}
+
+	if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
+		# Enable RA feature for when/if it is constructed,
+		# and RA is selected per interface pool (RA, DHCP, or both),
+		# but no one (should) want RA broadcast in syslog
+		[ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
+		xappend "--enable-ra"
+		xappend "--quiet-ra"
+		append_bool "$cfg" quietdhcp "--quiet-dhcp6"
+
+	elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
+		[ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
+	fi
+
+
+	echo >> $CONFIGFILE_TMP
+	config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	echo >> $CONFIGFILE_TMP
+	config_foreach filter_dnsmasq ipset dnsmasq_ipset_add "$cfg"
+	echo >> $CONFIGFILE_TMP
+
+	mv -f $CONFIGFILE_TMP $CONFIGFILE
+	mv -f $HOSTFILE_TMP $HOSTFILE
+
+	[ "$localuse" -gt 0 ] && {
+		rm -f /tmp/resolv.conf
+		[ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
+			echo "search $DOMAIN" >> /tmp/resolv.conf
+		}
+		DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
+		[ -e /proc/sys/net/ipv6 ] && DNS_SERVERS="$DNS_SERVERS ::1"
+		for DNS_SERVER in $DNS_SERVERS ; do
+			echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
+		done
+	}
+
+	config_list_foreach "$cfg" addnmount append_extramount
+
+	procd_open_instance $cfg
+	procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
+	procd_set_param file $CONFIGFILE
+	[ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
+	procd_set_param respawn
+
+	local instance_ifc instance_netdev
+	config_get instance_ifc "$cfg" interface
+	[ -n "$instance_ifc" ] && network_get_device instance_netdev "$instance_ifc" &&
+		[ -n "$instance_netdev" ] && procd_set_param netdev $instance_netdev
+
+	procd_add_jail dnsmasq ubus log
+	procd_add_jail_mount $CONFIGFILE $DHCPBOGUSHOSTNAMEFILE $DHCPSCRIPT $DHCPSCRIPT_DEPENDS
+	procd_add_jail_mount $EXTRA_MOUNT $RFC6761FILE $TRUSTANCHORSFILE
+	procd_add_jail_mount $dnsmasqconffile $dnsmasqconfdir $resolvdir $user_dhcpscript
+	procd_add_jail_mount /etc/passwd /etc/group /etc/TZ /etc/hosts /etc/ethers
+	procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
+	case "$logfacility" in */*)
+		[ ! -e "$logfacility" ] && touch "$logfacility"
+		procd_add_jail_mount_rw "$logfacility"
+	esac
+	[ -e "$hostsfile" ] && procd_add_jail_mount $hostsfile
+
+	procd_close_instance
+}
+
+dnsmasq_stop()
+{
+	local cfg="$1"
+	local noresolv resolvfile localuse=1
+
+	config_get_bool noresolv "$cfg" noresolv 0
+	config_get resolvfile "$cfg" "resolvfile"
+
+	[ "$noresolv" = 0 ] && [ "$resolvfile" != "/tmp/resolv.conf.d/resolv.conf.auto" ] && localuse=0
+	config_get_bool localuse "$cfg" localuse "$localuse"
+	[ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.d/resolv.conf.auto" /tmp/resolv.conf
+
+	rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
+}
+
+add_interface_trigger()
+{
+	local interface ifname ignore
+
+	config_get interface "$1" interface
+	config_get_bool ignore "$1" ignore 0
+	network_get_device ifname "$interface" || ignore=0
+
+	[ -n "$interface" ] && [ $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/dnsmasq reload
+}
+
+service_triggers()
+{
+	procd_add_reload_trigger "dhcp" "system"
+
+	config_load dhcp
+	config_foreach add_interface_trigger dhcp
+	config_foreach add_interface_trigger relay
+}
+
+boot()
+{
+	BOOT=1
+	start "$@"
+}
+
+start_service() {
+	local instance="$1"
+	local instance_found=0
+	local first_instance=""
+
+	. /lib/functions/network.sh
+
+	config_cb() {
+		local type="$1"
+		local name="$2"
+		if [ "$type" = "dnsmasq" ]; then
+			if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
+				instance_found=1
+			fi
+			if [ -z "$DEFAULT_INSTANCE" ]; then
+				local disabled
+				config_get_bool disabled "$name" disabled 0
+				if [ "$disabled" -eq 0 ]; then
+					# First enabled section will be assigned default instance name.
+					# Unnamed sections get precedence over named sections.
+					if expr "$cfg" : 'cfg[0-9a-f]*$' >/dev/null = "9"; then # See uci_fixup_section.
+						DEFAULT_INSTANCE="$name" # Unnamed config section.
+					elif [ -z "$first_instance" ]; then
+						first_instance="$name"
+					fi
+				fi
+			fi
+		fi
+	}
+
+	DEFAULT_INSTANCE=""
+	config_load dhcp
+	if [ -z "$DEFAULT_INSTANCE" ]; then
+		DEFAULT_INSTANCE="$first_instance" # No unnamed config section was found.
+	fi
+
+	if [ -n "$instance" ]; then
+		[ "$instance_found" -gt 0 ] || return
+		dnsmasq_start "$instance"
+	else
+		config_foreach dnsmasq_start dnsmasq
+	fi
+}
+
+reload_service() {
+	rc_procd start_service "$@"
+	procd_send_signal dnsmasq "$@"
+}
+
+stop_service() {
+	local instance="$1"
+	local instance_found=0
+
+	config_cb() {
+		local type="$1"
+		local name="$2"
+		if [ "$type" = "dnsmasq" ]; then
+			if [ -n "$instance" ] && [ "$instance" = "$name" ]; then
+				instance_found=1
+			fi
+		fi
+	}
+
+	config_load dhcp
+
+	if [ -n "$instance" ]; then
+		[ "$instance_found" -gt 0 ] || return
+		dnsmasq_stop "$instance"
+	else
+		config_foreach dnsmasq_stop dnsmasq
+	fi
+}