--- systemd/src/libsystemd/sd-netlink/netlink-socket.c.orig	2016-01-07 20:12:38.706759235 +0000
+++ systemd/src/libsystemd/sd-netlink/netlink-socket.c	2016-01-07 20:14:12.833428815 +0000
@@ -52,7 +52,7 @@
         int r;
 
         assert(nl);
-        assert(nl->fd > 0);
+        assert(nl->fd >= 0);
 
         r = getsockopt(nl->fd, SOL_NETLINK, NETLINK_LIST_MEMBERSHIPS, NULL, &len);
         if (r < 0) {