diff --git a/cmd/lopower/lopower.go b/cmd/lopower/lopower.go
index 82c66ec66..34ccdb986 100644
--- a/cmd/lopower/lopower.go
+++ b/cmd/lopower/lopower.go
@@ -476,6 +476,12 @@ func (lp *lpServer) acceptTCP(r *tcp.ForwarderRequest) {
 	tc := gonet.NewTCPConn(&wq, ep)
 	defer tc.Close()
 	r.Complete(false)
+
+	if destPort == 53 && lp.c.IsLocalIP(destIP) {
+		// TODO(bradfitz,maisem): do TCP DNS server here.
+		// ...
+	}
+
 	errc := make(chan error, 2)
 	go func() { _, err := io.Copy(tc, c); errc <- err }()
 	go func() { _, err := io.Copy(c, tc); errc <- err }()