From d55025ecaecbfada8feeab0b114db4697e90c1cc Mon Sep 17 00:00:00 2001
From: wwqgtxx <wwqgtxx@gmail.com>
Date: Tue, 28 Feb 2023 15:53:23 +0800
Subject: [PATCH] fix: udp loopback show "The requested address is not valid in
 its context."

---
 component/dialer/dialer.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/component/dialer/dialer.go b/component/dialer/dialer.go
index 2d3937c8..478e9f19 100644
--- a/component/dialer/dialer.go
+++ b/component/dialer/dialer.go
@@ -347,7 +347,12 @@ func (d Dialer) DialContext(ctx context.Context, network, address string) (net.C
 }
 
 func (d Dialer) ListenPacket(ctx context.Context, network, address string, rAddrPort netip.AddrPort) (net.PacketConn, error) {
-	return ListenPacket(ctx, ParseNetwork(network, rAddrPort.Addr()), address, WithOption(d.Opt))
+	opt := WithOption(d.Opt)
+	if rAddrPort.Addr().Unmap().IsLoopback() {
+		// avoid "The requested address is not valid in its context."
+		opt = WithInterface("")
+	}
+	return ListenPacket(ctx, ParseNetwork(network, rAddrPort.Addr()), address, opt)
 }
 
 func NewDialer(options ...Option) Dialer {