From eb2c6ebad66d893f0658f26baa78bb6058e09b76 Mon Sep 17 00:00:00 2001
From: "Ycarus (Yannick Chabanois)" <ycarus@zugaina.org>
Date: Fri, 30 Oct 2020 19:30:23 +0100
Subject: [PATCH] No error for interfaces that are not gre tunnel

---
 openmptcprouter/files/etc/firewall.gre-tunnel | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/openmptcprouter/files/etc/firewall.gre-tunnel b/openmptcprouter/files/etc/firewall.gre-tunnel
index 037f135f7..41b00e664 100644
--- a/openmptcprouter/files/etc/firewall.gre-tunnel
+++ b/openmptcprouter/files/etc/firewall.gre-tunnel
@@ -11,8 +11,10 @@ _setup_rules() {
 _setup_routes() {
 	config_get lookup $1 lookup
 	config_get gateway $1 gateway
-	intf=$(ifstatus | jsonfilter -e '@.l3_device' | tr -d "\n")
-	ip route replace default via $gateway dev $intf table $lookup
+	intf=$(ifstatus $1 | jsonfilter -e '@.l3_device' | tr -d "\n")
+	if [ -n "$lookup" ] && [ -n "$intf" ] && [ -n "$gateway" ]; then
+		ip route replace default via $gateway dev $intf table $lookup
+	fi
 }
 config_load network
 config_foreach _setup_rules interface