From 409c4e9c9885d34ab991b1dab41609c01944ad35 Mon Sep 17 00:00:00 2001
From: Shelikhoo <xiaokangwang@outlook.com>
Date: Mon, 27 Dec 2021 15:25:58 +0000
Subject: [PATCH] add address type classification function

---
 common/net/packetaddr/connection_adaptor.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/common/net/packetaddr/connection_adaptor.go b/common/net/packetaddr/connection_adaptor.go
index c93c2f533..1844233ce 100644
--- a/common/net/packetaddr/connection_adaptor.go
+++ b/common/net/packetaddr/connection_adaptor.go
@@ -139,3 +139,15 @@ func (pc *packetConnWrapper) Write(p []byte) (n int, err error) {
 func (pc *packetConnWrapper) Close() error {
 	return pc.Close()
 }
+
+func GetDestinationSubsetOf(dest net.Destination) (bool, error) {
+	if !dest.Address.Family().IsDomain() {
+		return false, errNotPacketConn
+	}
+	switch dest.Address.Domain() {
+	case seqPacketMagicAddress:
+		return false, nil
+	default:
+		return false, errNotPacketConn
+	}
+}