diff --git a/tunnel/dialer.go b/tunnel/dialer.go
index 89c997f0..a8f7f0e9 100644
--- a/tunnel/dialer.go
+++ b/tunnel/dialer.go
@@ -10,6 +10,7 @@ import (
 	"net"
 	"net/netip"
 
+	"github.com/celzero/firestack/intra/core"
 	"github.com/celzero/firestack/intra/log"
 	"github.com/celzero/firestack/intra/protect"
 	"github.com/celzero/firestack/intra/settings"
@@ -21,6 +22,11 @@ import (
 
 var _ protect.RDialer = (*gtunnel)(nil)
 
+// Handle implements protect.RDialer.
+func (h *gtunnel) Handle() uintptr {
+	return core.Loc(h)
+}
+
 // Dial implements protect.RDialer.
 func (t *gtunnel) Dial(network, addr string) (protect.Conn, error) {
 	taddr, proto := fulladdr(addr) // taddr may be nil