diff --git a/gold/link/link.go b/gold/link/link.go
index 27c01b1..16c2afd 100644
--- a/gold/link/link.go
+++ b/gold/link/link.go
@@ -7,6 +7,7 @@ import (
 	"github.com/sirupsen/logrus"
 
 	"github.com/fumiama/WireGold/gold/head"
+	"github.com/fumiama/WireGold/helper"
 )
 
 // Link 是本机到 peer 的连接抽象
@@ -100,3 +101,11 @@ func (l *Link) Write(p *head.Packet, istransfer bool) (n int, err error) {
 	}
 	return
 }
+
+func (l *Link) String() (n string) {
+	n = "default"
+	if l.pubk != nil {
+		n = helper.BytesToString(l.pubk[:24])
+	}
+	return
+}
diff --git a/gold/link/router.go b/gold/link/router.go
index 9da914e..30011f0 100644
--- a/gold/link/router.go
+++ b/gold/link/router.go
@@ -5,7 +5,6 @@ import (
 	"net"
 	"sync"
 
-	"github.com/fumiama/WireGold/helper"
 	"github.com/sirupsen/logrus"
 )
 
@@ -85,11 +84,7 @@ func (r *Router) SetItem(ip *net.IPNet, l *Link) {
 			copy(r.list[i+1:], r.list[i:len(r.list)-1])
 			r.list[i] = ip
 			r.table[ip.String()] = l
-			lnkname := "default"
-			if l.pubk != nil {
-				lnkname = helper.BytesToString(l.pubk[:24])
-			}
-			logrus.Infoln("[router] add route in link", lnkname, "to", ip, "-->", l.peerip)
+			logrus.Infoln("[router] add route in link", l, "to", ip, "-->", l.peerip)
 			break
 		}
 	}