From 9ea5cbf81f68b4a9e7414cac11b90ea06ff1b0b3 Mon Sep 17 00:00:00 2001
From: David Anderson <danderson@tailscale.com>
Date: Fri, 26 Mar 2021 21:47:07 -0700
Subject: [PATCH] cmd/tailscaled: readd tun.Diagnose call, mistakenly lost
 during refactor.

Signed-off-by: David Anderson <danderson@tailscale.com>
---
 cmd/tailscaled/tailscaled.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmd/tailscaled/tailscaled.go b/cmd/tailscaled/tailscaled.go
index f0215f6fb..77e348c1c 100644
--- a/cmd/tailscaled/tailscaled.go
+++ b/cmd/tailscaled/tailscaled.go
@@ -339,6 +339,7 @@ func tryEngine(logf logger.Logf, linkMon *monitor.Mon, name string) (e wgengine.
 	} else {
 		dev, err := tun.New(logf, name)
 		if err != nil {
+			tun.Diagnose(logf, name)
 			return nil, false, err
 		}
 		conf.TUN = dev