From: Andre Noll <maan@tuebingen.mpg.de>
Date: Wed, 25 Mar 2020 12:50:25 +0000 (+0100)
Subject: attach_to_bridge(): Improve error message.
X-Git-Url: http://git.tuebingen.mpg.de/?a=commitdiff_plain;ds=sidebyside;h=241eb766daa57d8ab200d20c35c2a490e0734691;p=micoforia.git

attach_to_bridge(): Improve error message.

if_nametoindex() sets errno on errors, so let's print the error
string using %m.
---

diff --git a/util.c b/util.c
index ebe5b1e..08f4832 100644
--- a/util.c
+++ b/util.c
@@ -526,7 +526,7 @@ bool attach_to_bridge(const char *iface, const char *bridge)
 
 	INFO_LOG("adding interface %s to bridge %s\n", iface, bridge);
 	if (!(idx = if_nametoindex(iface))) {
-		ERROR_LOG("no index for %s\n", iface);
+		ERROR_LOG("no index for %s: %m\n", iface);
 		return false;
 	}
 	if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {