Allow to peers behind NAT to get up to preferred_max connections (#2543)

Allow to peers behind NAT to get up to preffered_max connections

If peer has only outbound connections it's mot likely behind NAT and we should not stop it from getting more outbound connections

servers/src/grin/seed.rs

@@ -311,7 +311,7 @@ fn listen_for_addrs(
 	let addrs: Vec<PeerAddr> = rx.try_iter().collect();
 
 	// If we have a healthy number of outbound peers then we are done here.
-	if peers.healthy_peers_mix() {
+	if peers.peer_count() > peers.peer_outbound_count() && peers.healthy_peers_mix() {
 		return;
 	}