diff --git a/gold/link/listen.go b/gold/link/listen.go
index 5d8df85..90ea333 100644
--- a/gold/link/listen.go
+++ b/gold/link/listen.go
@@ -33,7 +33,7 @@ func (m *Me) listen() (conn *net.UDPConn, err error) {
 						logrus.Debugln("[link] recv from endpoint", addr, "src", packet.Src, "dst", packet.Dst)
 						// logrus.Debugln("[link] recv:", hex.EncodeToString(lbf))
 						if ok {
-							if p.peerip == nil || p.peerip.String() != addr.String() {
+							if p.endpoint == nil || p.endpoint.String() != addr.String() {
 								logrus.Infoln("[link] set endpoint of peer", p.peerip, "to", addr.String())
 								p.endpoint = addr
 							}