cnet/service: RandomPort no longer binds on 127.0.0.1

cnet/service.go

@@ -43,7 +43,7 @@ type Service struct {
 }
 
 func RandomPort() (int, error) {
-	l, err := net.Listen("tcp", "127.0.0.1:0")
+	l, err := net.Listen("tcp", ":0")
 	if err != nil {
 		return 0, err
 	}