From d441c4e22a30d035ce82f2a9aa9fabeeb16521f0 Mon Sep 17 00:00:00 2001
From: kari-ts <kari@tailscale.com>
Date: Wed, 16 Apr 2025 13:46:05 -0700
Subject: [PATCH] android: log when VPN not established

Updates tailscale/tailscale#15506

Signed-off-by: kari-ts <kari@tailscale.com>
---
 libtailscale/net.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libtailscale/net.go b/libtailscale/net.go
index 43d90da..0405316 100644
--- a/libtailscale/net.go
+++ b/libtailscale/net.go
@@ -207,6 +207,7 @@ func (b *backend) updateTUN(rcfg *router.Config, dcfg *dns.OSConfig) error {
 	b.logger.Logf("updateTUN: established VPN")
 
 	if parcelFD == nil {
+		b.logger.Logf("updateTUN: could not establish VPN because builder.Establish returned a nil ParcelFileDescriptor")
 		return errVPNNotPrepared
 	}