--- a/libdnet-stripped/src/route-linux.c
+++ b/libdnet-stripped/src/route-linux.c
@@ -146,7 +146,7 @@
 
 	memcpy(&rt.rtmsg_dst, &dst.addr_ip6, sizeof(rt.rtmsg_dst));
 
-	if (!IN6_IS_ADDR_UNSPECIFIED(&entry->route_gw.addr_ip6)) {
+	if (!IN6_IS_ADDR_UNSPECIFIED((const struct in6_addr *)&entry->route_gw.addr_ip6)) {
 		rt.rtmsg_flags |= RTF_GATEWAY;
 		memcpy(&rt.rtmsg_gateway, &entry->route_gw.addr_ip6,
 				sizeof(rt.rtmsg_gateway));