diff --git a/openbsc/src/bsc_mgcp.c b/openbsc/src/bsc_mgcp.c
index 320d0b1..d89eb83 100644
--- a/openbsc/src/bsc_mgcp.c
+++ b/openbsc/src/bsc_mgcp.c
@@ -257,7 +257,7 @@
 	proto = fd == &endp->local_rtp ? PROTO_RTP : PROTO_RTCP;
 
 	/* We have no idea who called us, maybe it is the BTS. */
-	if (dest == DEST_NETWORK && endp->bts_rtp == 0) {
+	if (dest == DEST_NETWORK && (endp->bts_rtp == 0 || forward_ip)) {
 		/* it was the BTS... */
 		if (!bts_ip || memcmp(&addr.sin_addr, &bts_in, sizeof(bts_in)) == 0) {
 			if (fd == &endp->local_rtp) {