diff --git a/vars/default_vars.yml b/vars/default_vars.yml
index 8d3400a65..cd76d47af 100644
--- a/vars/default_vars.yml
+++ b/vars/default_vars.yml
@@ -160,10 +160,22 @@ wondershaper_enabled: False
 # The following 2 override the detection when not "auto"
 user_wan_iface: auto
 user_lan_iface: auto
-wan_ip: dhcp
-wan_netmask:
-wan_gateway:
-wan_nameserver:
+
+# Ethernet - IF NECESSARY, CUSTOMIZE THESE 4+1 VARS IN /etc/iiab/local_vars.yml
+#
+# See "How do I set a static IP Address?" in http://FAQ.IIAB.IO
+wan_ip: dhcp         # wan_ip: 192.168.1.99
+wan_netmask:         # wan_netmask: 255.255.255.0
+wan_gateway:         # wan_gateway: 192.168.1.1
+wan_nameserver:      # wan_nameserver: 192.168.1.1
+wan_ipV4LL: False    # Keep this as 'False' to strongly mandate the Static IP
+# <wan_ip> for eth0 when no DHCP is detected on the wire.
+#
+# Change this to 'True' if you want the 3-steps below:
+# 1. Try to set eth0 as Static IP <wan_ip> (if 'arp <wan_gateway>' responds).
+# 2. Try to set eth0 using DHCP, if DHCP responds within 10 seconds.
+# 3. Set eth0 to a link-local address 169.254.x.y if both above fail.
+# Details in roles/network/templates/network/dhcpcd.conf.j2 for /etc/dhcpcd.conf
 
 
 # Parameters for Aggregate Roles