From 3789c34b22e7a7466149bfbeedf05bf49188130c Mon Sep 17 00:00:00 2001
From: Bhasker Hariharan <bhaskerh@google.com>
Date: Tue, 3 Sep 2019 15:59:58 -0700
Subject: Make UDP traceroute work.

Adds support to generate Port Unreachable messages for UDP
datagrams received on a port for which there is no valid
endpoint.

Fixes #703

PiperOrigin-RevId: 267034418
---
 pkg/tcpip/stack/route.go | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'pkg/tcpip/stack/route.go')

diff --git a/pkg/tcpip/stack/route.go b/pkg/tcpip/stack/route.go
index e52cdd674..5c8b7977a 100644
--- a/pkg/tcpip/stack/route.go
+++ b/pkg/tcpip/stack/route.go
@@ -217,3 +217,8 @@ func (r *Route) MakeLoopedRoute() Route {
 	}
 	return l
 }
+
+// Stack returns the instance of the Stack that owns this route.
+func (r *Route) Stack() *Stack {
+	return r.ref.stack()
+}
-- 
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