X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fodhcpd.git;a=blobdiff_plain;f=src%2Frouter.c;h=971197530918776d1f185dae9cab8a255fac5474;hp=990782426967271a985eec10e558d95d76cb57b4;hb=32b977a5336612a5c01f7426c4d165685fa8aca0;hpb=01d3f9d64486ac1daa144848944e877e7f0cb762

diff --git a/src/router.c b/src/router.c
index 9907824..9711975 100644
--- a/src/router.c
+++ b/src/router.c
@@ -99,6 +99,9 @@ int setup_router_interface(struct interface *iface, bool enable)
 	uloop_timeout_cancel(&iface->timer_rs);
 	iface->timer_rs.cb = NULL;
 
+	if (iface->ifindex <= 0)
+		return -1;
+
 	setsockopt(router_event.uloop.fd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP,
 			&all_nodes, sizeof(all_nodes));
 	setsockopt(router_event.uloop.fd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP,