Only call radvd_update if a zone contains an IPv6.

On systems which lacks any IPv6 configured zone, radvd would be
started with an empty configuration file and crashes which will
brick the system startup and results in a frozen system.

Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/functions/functions.routing b/src/functions/functions.routing
index c7aac094f11cdca2c4d88abc8a65df4816666425..4824f3454f62ca7856893b20d21f5e7b5e0c98b1 100644 (file)
--- a/src/functions/functions.routing
+++ b/src/functions/functions.routing
@@ -81,7 +81,9 @@ routing_default_update() {
                routes=$(echo ${routes})
 
                # Reload radvd configuration
-               [[ "${proto}" = "ipv6" ]] && radvd_update
+               if [[ "${proto}" = "ipv6" ]] && db_exists "${zone}/ipv6"; then
+                       radvd_update
+               fi
 
                # Remove all default routes.
                if [ -z "${routes}" ]; then