From: Michael Tremer <michael.tremer@ipfire.org>
Date: Mon, 17 Sep 2018 13:25:55 +0000 (+0200)
Subject: ip-tunnel: Fix protocol detection when local address is empty
X-Git-Tag: 010~86
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=503eed0fda092faaa4cabdba9fe947eb41f6a0a4;p=network.git

ip-tunnel: Fix protocol detection when local address is empty

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/functions/functions.ip-tunnel b/src/functions/functions.ip-tunnel
index 3baf280f..38164896 100644
--- a/src/functions/functions.ip-tunnel
+++ b/src/functions/functions.ip-tunnel
@@ -109,8 +109,8 @@ ip_tunnel_add() {
 	fi
 
 	# We cannot mix IPv6 and IPv4
-	if [[ "${remote_address_protocol}" != \
-		"$(ip_detect_protocol "${local_address}")" ]] ; then
+	if isset local_address && \
+			[[ "${remote_address_protocol}" != "$(ip_detect_protocol "${local_address}")" ]] ; then
 		log ERROR "Local and remote address\
 			are not from the same IP protocol"
 		return ${EXIT_ERROR}