diff --git a/src/libosmo-mgcp/mgcp_network.c b/src/libosmo-mgcp/mgcp_network.c
index 6a726d4..994ce45 100644
--- a/src/libosmo-mgcp/mgcp_network.c
+++ b/src/libosmo-mgcp/mgcp_network.c
@@ -847,29 +847,13 @@
 				 osmo_sockaddr_to_str(addr));
 			return 0;
 		}
-		switch (conn->conn->mode) {
-		case MGCP_CONN_LOOPBACK:
-			/* HACK: for IuUP, we want to reply with an IuUP Initialization ACK upon the first RTP
-			 * message received. We currently hackishly accomplish that by putting the endpoint in
-			 * loopback mode and patching over the looped back RTP message to make it look like an
-			 * ack. We don't know the femto cell's IP address and port until the RAB Assignment
-			 * Response is received, but the nano3G expects an IuUP Initialization Ack before it even
-			 * sends the RAB Assignment Response. Hence, if the remote address is 0.0.0.0 and the
-			 * MGCP port is in loopback mode, allow looping back the packet to any source. */
-			LOGPCONN(conn->conn, DRTP, LOGL_ERROR,
-				 "In loopback mode and remote address not set: allowing data from address: %s\n",
-				 osmo_sockaddr_to_str(addr));
-			return 0;
-
-		default:
-			/* Receiving early media before the endpoint is configured. Instead of logging
-			 * this as an error that occurs on every call, keep it more low profile to not
-			 * confuse humans with expected errors. */
-			LOGPCONN(conn->conn, DRTP, LOGL_INFO,
-				 "Rx RTP from %s, but remote address not set: dropping early media\n",
-				 osmo_sockaddr_to_str(addr));
-			return -1;
-		}
+		/* Receiving early media before the endpoint is configured. Instead of logging
+		 * this as an error that occurs on every call, keep it more low profile to not
+		 * confuse humans with expected errors. */
+		LOGPCONN(conn->conn, DRTP, LOGL_INFO,
+			 "Rx RTP from %s, but remote address not set: dropping early media\n",
+			 osmo_sockaddr_to_str(addr));
+		return -1;
 	}
 
 	/* Note: Check if the inbound RTP data comes from the same host to