diff --git a/src/libosmo-mgcp/mgcp_network.c b/src/libosmo-mgcp/mgcp_network.c
index dfa952b..5b3ea51 100644
--- a/src/libosmo-mgcp/mgcp_network.c
+++ b/src/libosmo-mgcp/mgcp_network.c
@@ -1037,6 +1037,12 @@
 	LOGPCONN(conn->conn, DRTP, LOGL_DEBUG, "sending dummy packet... %s\n",
 		 mgcp_conn_dump(conn->conn));
 
+	/* Before we try to deliver the packet, we check if the destination
+	 * port and IP-Address make sense at all. If not, we will be unable
+	 * to deliver the packet. */
+	if (check_rtp_destin(conn) != 0)
+		goto failed;
+
 	rc = mgcp_udp_send(conn->end.rtp.fd, &conn->end.addr,
 			   conn->end.rtp_port, rtp_dummy_payload, sizeof(rtp_dummy_payload));
 
diff --git a/tests/mgcp/mgcp_test.c b/tests/mgcp/mgcp_test.c
index e6862e5..5bb7b27 100644
--- a/tests/mgcp/mgcp_test.c
+++ b/tests/mgcp/mgcp_test.c
@@ -634,6 +634,10 @@
 		dummy_packets += 1;
 	}
 
+	/* Make sure address+port are valid */
+	OSMO_ASSERT(dest_host);
+	OSMO_ASSERT(dest_port);
+
 	return len;
 }
 
diff --git a/tests/mgcp/mgcp_test.ok b/tests/mgcp/mgcp_test.ok
index 9c48147..d3f8a26 100644
--- a/tests/mgcp/mgcp_test.ok
+++ b/tests/mgcp/mgcp_test.ok
Binary files differ