From 09c28e0355c2d5be5328e76fe2e0e81d64291269 Mon Sep 17 00:00:00 2001
From: Dreamacro <8615343+Dreamacro@users.noreply.github.com>
Date: Mon, 28 Dec 2020 22:24:58 +0800
Subject: [PATCH] Fix: fallback bind fn should not bind global unicast

---
 component/dialer/bind.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/component/dialer/bind.go b/component/dialer/bind.go
index cb24a8b6..55e5f163 100644
--- a/component/dialer/bind.go
+++ b/component/dialer/bind.go
@@ -52,6 +52,10 @@ func lookupUDPAddr(ip net.IP, addrs []net.Addr) (*net.UDPAddr, error) {
 }
 
 func fallbackBindToDialer(dialer *net.Dialer, network string, ip net.IP, name string) error {
+	if !ip.IsGlobalUnicast() {
+		return nil
+	}
+
 	iface, err := net.InterfaceByName(name)
 	if err != nil {
 		return err