diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index d773743d..d5d64b6b 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -1632,7 +1632,7 @@ nl_parse_route(struct nl_parse_state *s, struct nlmsghdr *h)
 	  if ((i->rtm_family == AF_INET6) && ipa_in_netX(ra->nh.gw, (net_addr *) &sit))
 	    return;
 
-	  if (i->rtm_flags & RTNH_F_ONLINK)
+	  if ((i->rtm_flags & RTNH_F_ONLINK) || (krt_src == KRT_SRC_ALIEN))
 	    ra->nh.flags |= RNF_ONLINK;
 
 	  neighbor *nbr;