From 9012520052edaaad538c02ebff4fffbaa89fafed Mon Sep 17 00:00:00 2001
From: Michael Stapelberg <stapelberg@google.com>
Date: Sat, 15 Dec 2018 13:36:21 +0100
Subject: [PATCH] diag: more informative error messages

---
 internal/diag/ping.go | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/internal/diag/ping.go b/internal/diag/ping.go
index 4a55522..a39bd47 100644
--- a/internal/diag/ping.go
+++ b/internal/diag/ping.go
@@ -171,16 +171,15 @@ func (d *ping6gw) Evaluate() (string, error) {
 	}
 	addr, err := net.ResolveIPAddr("ip6", gw)
 	if err != nil {
-		return "", err
+		return "", fmt.Errorf("net.ResolveIPAddr(%s): %v", gw, err)
 	}
 	p, err := ping.New("", "::")
 	if err != nil {
-		return "", err
+		return "", fmt.Errorf("ping.New(::): %v", err)
 	}
 	rtt, err := p.Ping(addr, timeout)
 	if err != nil {
-		return "", err
-		//return fmt.Errorf("%s did not respond within %v", gw, timeout)
+		return "", fmt.Errorf("ping6(%v, %v): %v", addr, timeout, err)
 	}
 	return formatRTT(rtt) + " from " + gw, nil
 }