[client] Fix legacy routing exclusion routes in kernel mode (#4167)

util/net/listener_listen.go

@@ -120,17 +120,8 @@ func (c *UDPConn) Close() error {
 	return closeConn(c.ID, c.UDPConn)
 }
 
-// WrapUDPConn wraps an existing *net.UDPConn with nbnet functionality
-func WrapUDPConn(conn *net.UDPConn) *UDPConn {
-	return &UDPConn{
-		UDPConn:   conn,
-		ID:        GenerateConnID(),
-		seenAddrs: &sync.Map{},
-	}
-}
-
 // RemoveAddress removes an address from the seen cache and triggers removal hooks.
-func (c *UDPConn) RemoveAddress(addr string) {
+func (c *PacketConn) RemoveAddress(addr string) {
 	if _, exists := c.seenAddrs.LoadAndDelete(addr); !exists {
 		return
 	}
@@ -159,6 +150,16 @@ func (c *UDPConn) RemoveAddress(addr string) {
 	}
 }
 
+
+// WrapPacketConn wraps an existing net.PacketConn with nbnet functionality
+func WrapPacketConn(conn net.PacketConn) *PacketConn {
+	return &PacketConn{
+		PacketConn: conn,
+		ID:         GenerateConnID(),
+		seenAddrs:  &sync.Map{},
+	}
+}
+
 func callWriteHooks(id ConnectionID, seenAddrs *sync.Map, b []byte, addr net.Addr) {
 	// Lookup the address in the seenAddrs map to avoid calling the hooks for every write
 	if _, loaded := seenAddrs.LoadOrStore(addr.String(), true); !loaded {

util/net/listener_listen_ios.go

@@ -4,7 +4,7 @@ import (
 	"net"
 )
 
-// WrapUDPConn on iOS just returns the original connection since iOS handles its own networking
-func WrapUDPConn(conn *net.UDPConn) *net.UDPConn {
+// WrapPacketConn on iOS just returns the original connection since iOS handles its own networking
+func WrapPacketConn(conn *net.UDPConn) *net.UDPConn {
 	return conn
 }