From 8e3e6f8dde654bdf2f1e1cf7bac6c0a2894a3fe8 Mon Sep 17 00:00:00 2001
From: Florian Eckert <fe@dev.tdt.de>
Date: Thu, 16 Jul 2020 15:08:04 +0200
Subject: [PATCH] mwan3: fix IPv6 routing add handling

This fixes routing handling. Introduced with the last version update.
The following message disappears on the shell
when mwan3 is called with 'mwna3 restart`.

`Error: Invalid gateway address.`

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
[aaronjg@stanford.edu: fully unset variable and handle ipv4 as well]
Signed-off-by: Aaron Goodman <aaronjg@stanford.edu>
---
 net/mwan3/files/lib/mwan3/mwan3.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/mwan3/files/lib/mwan3/mwan3.sh b/net/mwan3/files/lib/mwan3/mwan3.sh
index d7def8672..3ce880fd2 100644
--- a/net/mwan3/files/lib/mwan3/mwan3.sh
+++ b/net/mwan3/files/lib/mwan3/mwan3.sh
@@ -518,6 +518,8 @@ mwan3_create_iface_route()
 		network_get_gateway${V_} via "$1"
 	fi
 
+	( [ -z "$via" ] || [ "$via" = "0.0.0.0" ] || [ "$via" = "::" ] ) && unset via
+
 	network_get_metric metric "$1"
 
 	$IP route flush table "$id"