From: Gert Doering <gert@greenie.muc.de>
Date: Sat, 30 Nov 2013 21:38:28 +0000 (+0100)
Subject: Fix IPv6_V6ONLY logic.
X-Git-Tag: v2.4_alpha1~504
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=451de0a8d61a8a2c4a049837374a728090b4e4d6;p=thirdparty%2Fopenvpn.git

Fix IPv6_V6ONLY logic.

The "ipv6only" setsockopt logic introduced by 8832c6c4cf was inverted,
fix.  Also add a msg() to show what value is set, as that makes strange
v4/v6 connectivity problems much easier to spot.

Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Arne Schwabe <arne@rfc2549.org>
Message-Id: <1385847508-32248-1-git-send-email-gert@greenie.muc.de>
URL: http://article.gmane.org/gmane.network.openvpn.devel/8079
---

diff --git a/src/openvpn/socket.c b/src/openvpn/socket.c
index 141af72dd..100eedd6e 100644
--- a/src/openvpn/socket.c
+++ b/src/openvpn/socket.c
@@ -908,8 +908,9 @@ socket_bind (socket_descriptor_t sd,
 
   if (ai_family == AF_INET6)
     {
-      int v6only = ipv6only ? 0: 1;	/* setsockopt must have an "int" */
+      int v6only = ipv6only ? 1: 0;	/* setsockopt must have an "int" */
 
+      msg (M_INFO, "setsockopt(IPV6_V6ONLY=%d)", v6only);
       if (setsockopt(sd, IPPROTO_IPV6, IPV6_V6ONLY, &v6only, sizeof(v6only)))
 	{
 	  msg (M_NONFATAL|M_ERRNO, "Setting IPV6_V6ONLY=%d failed", v6only);