From c8f258a90427a80db831c3791742488fc8f9032a Mon Sep 17 00:00:00 2001
From: Anton Tolchanov <anton@tailscale.com>
Date: Mon, 8 Jul 2024 17:29:08 +0100
Subject: [PATCH] prober: propagate DERPMap request creation errors

Updates tailscale/corp#8497

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
---
 prober/derp.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/prober/derp.go b/prober/derp.go
index 60a31a1bf..0dadbe8c2 100644
--- a/prober/derp.go
+++ b/prober/derp.go
@@ -286,7 +286,7 @@ func (d *derpProber) updateMap(ctx context.Context) error {
 	} else {
 		req, err := http.NewRequestWithContext(ctx, "GET", d.derpMapURL, nil)
 		if err != nil {
-			return nil
+			return err
 		}
 		res, err := httpOrFileClient.Do(req)
 		if err != nil {