Missing check for NULL-pointer.

diff --git a/src/route.c b/src/route.c
index bf13f44..42ae1fd 100644 (file)
--- a/src/route.c
+++ b/src/route.c
@@ -346,7 +346,7 @@ static __inline__ void route_ipv4_unicast(node_t *source, vpn_packet_t *packet)
 
        via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via;
        
-       if(packet->len > via->mtu && via != myself) {
+       if(via && packet->len > via->mtu && via != myself) {
                ifdebug(TRAFFIC) logger(LOG_INFO, _("Packet for %s (%s) length %d larger than MTU %d"), subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu);
                if(packet->data[20] & 0x40) {
                        packet->len = via->mtu;
@@ -485,7 +485,7 @@ static __inline__ void route_ipv6_unicast(node_t *source, vpn_packet_t *packet)
 
        via = (subnet->owner->via == myself) ? subnet->owner->nexthop : subnet->owner->via;
        
-       if(packet->len > via->mtu && via != myself) {
+       if(via && packet->len > via->mtu && via != myself) {
                ifdebug(TRAFFIC) logger(LOG_INFO, _("Packet for %s (%s) length %d larger than MTU %d"), subnet->owner->name, subnet->owner->hostname, packet->len, via->mtu);
                packet->len = via->mtu;
                route_ipv6_unreachable(source, packet, ICMP6_PACKET_TOO_BIG, 0);