From 9d89e85db7e7d2db905e5e3b235316a991c47fd4 Mon Sep 17 00:00:00 2001
From: David Anderson <danderson@tailscale.com>
Date: Wed, 26 Jul 2023 14:39:52 -0700
Subject: [PATCH] wgengine/magicsock: document mysterious-looking assignment

Updates #cleanup

Signed-off-by: David Anderson <danderson@tailscale.com>
---
 wgengine/magicsock/magicsock.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/wgengine/magicsock/magicsock.go b/wgengine/magicsock/magicsock.go
index ed0a71b0e..06fd5e59b 100644
--- a/wgengine/magicsock/magicsock.go
+++ b/wgengine/magicsock/magicsock.go
@@ -1952,6 +1952,8 @@ type connBind struct {
 	closed bool
 }
 
+// This is a compile-time assertion that connBind implements the wireguard-go
+// conn.Bind interface.
 var _ conn.Bind = (*connBind)(nil)
 
 // BatchSize returns the number of buffers expected to be passed to