Don't forward localhost connections over the public network

peer.go

@@ -534,8 +534,11 @@ func (p *Peer) peersMessage() *ethwire.Msg {
 	outPeers := make([]interface{}, len(p.ethereum.InOutPeers()))
 	// Serialise each peer
 	for i, peer := range p.ethereum.InOutPeers() {
+		// Don't return localhost as valid peer
+		if !net.ParseIP(peer.conn.RemoteAddr().String()).IsLoopback() {
 			outPeers[i] = peer.RlpData()
 		}
+	}
 
 	// Return the message to the peer with the known list of connected clients
 	return ethwire.NewMessage(ethwire.MsgPeersTy, outPeers)