diff --git a/libnetutil/netutil.cc b/libnetutil/netutil.cc
index 8277ea5a2..0d4945e70 100644
--- a/libnetutil/netutil.cc
+++ b/libnetutil/netutil.cc
@@ -3189,6 +3189,8 @@ static int route_dst_netlink(const struct sockaddr_storage *dst,
       p = if_indextoname(intf_index, namebuf);
       assert(p != NULL);
       ii = getInterfaceByName(namebuf, dst->ss_family);
+      if (ii == NULL)
+        ii = getInterfaceByName(namebuf, AF_UNSPEC);
       if (ii == NULL)
         netutil_fatal("%s: can't find interface \"%s\"", __func__, namebuf);
     } else if (rtattr->rta_type == RTA_PREFSRC && rnfo->srcaddr.ss_family == AF_UNSPEC) {