diff --git a/openbsc/src/gprs/gtphub.c b/openbsc/src/gprs/gtphub.c
index d6dbb4d..b3638fe 100644
--- a/openbsc/src/gprs/gtphub.c
+++ b/openbsc/src/gprs/gtphub.c
@@ -960,10 +960,10 @@
 	return (uint32_t)nrm->repl;
 }
 
-static int gtphub_map_seq(struct gtp_packet_desc *p,
-			  struct gtphub_peer_port *from_port,
-			  struct gtphub_peer_port *to_port,
-			  time_t now)
+static void gtphub_map_seq(struct gtp_packet_desc *p,
+			   struct gtphub_peer_port *from_port,
+			   struct gtphub_peer_port *to_port,
+			   time_t now)
 {
 	/* Store a mapping in to_peer's map, so when we later receive a GTP
 	 * packet back from to_peer, the seq nr can be unmapped back to its
@@ -974,8 +974,6 @@
 
 	/* Change the GTP packet to yield the new, mapped seq nr */
 	set_seq(p, nrm->repl);
-
-	return 0;
 }
 
 static struct gtphub_peer_port *gtphub_unmap_seq(struct gtp_packet_desc *p,
@@ -1681,6 +1679,9 @@
 	struct gtphub_peer_port *pp;
 	struct gtphub_resolved_ggsn *ggsn;
 
+	LOG("Resolved GGSN callback: %s %s\n",
+	    apn_oi_str, osmo_hexdump((unsigned char*)resolved_addr, sizeof(*resolved_addr)));
+
 	pp = gtphub_port_have(hub, &hub->to_ggsns[GTPH_PLANE_CTRL],
 			      resolved_addr, 2123);
 	if (!pp) {