# HG changeset patch
# User David Demelier <markand@malikania.fr>
# Date 1488883612 -3600
# Node ID e85366a81ab4e4aa34a77c3a083506c1bb31d62a
# Parent  ce1903f4bdb77af0e8b9a03d359c92903fb2480c
Fix #640: set IPV6_V6ONLY in any case

Some systems may disable or enable usage of IPv4 fallback when using IPv6
sockets.

Therefore, we need to explicitly set the IPV6_V6ONLY option in any case.

Task:   #640
Errata: 20170703

diff -r ce1903f4bdb7 -r e85366a81ab4 libirccd/irccd/transport.cpp
--- a/libirccd/irccd/transport.cpp	Sat Feb 18 09:08:51 2017 +0100
+++ b/libirccd/irccd/transport.cpp	Tue Mar 07 11:46:52 2017 +0100
@@ -377,8 +377,7 @@
 
     if (mode & v6) {
         // Disable or enable IPv4 when using IPv6.
-        if (!(mode & v4))
-            m_socket.set(net::option::Ipv6Only(true));
+        m_socket.set(net::option::Ipv6Only(!(mode & v4)));
 
         if (address == "*")
             m_socket.bind(net::ipv6::any(port));