diff --git a/src/libosmo-mgcp/mgcp_network.c b/src/libosmo-mgcp/mgcp_network.c
index eb44f9b82..aac3e5177 100644
--- a/src/libosmo-mgcp/mgcp_network.c
+++ b/src/libosmo-mgcp/mgcp_network.c
@@ -1077,7 +1077,16 @@ static int rtp_data_net(struct osmo_fd *fd, unsigned int what)
 
 	/* Check if the connection is in loopback mode, if yes, just send the
 	 * incoming data back to the origin */
+
 	if (conn_src->conn->mode == MGCP_CONN_LOOPBACK) {
+		/* When we are in loopback mode, we loop back all incoming
+		 * packets back to their origin. We will use the originating
+		 * address data from the UDP packet header to patch the
+		 * outgoing address in connection on the fly */
+		if (conn_src->end.rtp_port == 0) {
+			conn_src->end.addr = addr.sin_addr;
+			conn_src->end.rtp_port = addr.sin_port;
+		}
 		return mgcp_send_rtp(proto, &addr, buf,
 				     len, conn_src, conn_src);
 	}