From 3e4c46259ddc4a5240fd53562007dcc2521bcf3a Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Tue, 6 Oct 2020 20:24:10 -0700
Subject: [PATCH] wgengine/magicsock: don't do netchecks either when network is
 down

A continuation of 6ee219a25de5dee623e94e7aedec4be41d1dd6fe

Updates #640
---
 wgengine/magicsock/magicsock.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wgengine/magicsock/magicsock.go b/wgengine/magicsock/magicsock.go
index 156235ec4..12ba7b880 100644
--- a/wgengine/magicsock/magicsock.go
+++ b/wgengine/magicsock/magicsock.go
@@ -460,7 +460,7 @@ func (c *Conn) updateNetInfo(ctx context.Context) (*netcheck.Report, error) {
 	dm := c.derpMap
 	c.mu.Unlock()
 
-	if dm == nil {
+	if dm == nil || c.networkDown() {
 		return new(netcheck.Report), nil
 	}