id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc 849,Disabling IPv6 on the netiface causes a fatal error,thinner,Gert Döring,"Since the ignoring of `--tun-ipv6` and `All tun devices on all platforms are always considered to be IPv6 capable.` disabling IPv6 on the tun interface basically means disabling OpenVPN :) In and of itself it might not be very problematic, but it is a very easy way for companies to disable OpenVPN on their employees' computers. It's very easy to recreate. On Linux:: just run `sysctl -w net.ipv6.conf.all.disable_ipv6=1` and `sysctl -w net.ipv6.conf.default.disable_ipv6=1` Windows:: Go to Network Connections, right-click the adapter and select properties. Then uncheck `Internet Protocol Version 6 (TCP/IPv6)` and then just start OpenVPN as you normally would. The error in the log is {{{ NETSH: C:\Windows\system32\netsh.exe interface ipv6 set address interface=NUM ADDRESS store=active ERROR: netsh command failed: returned error code 1 }}}",Bug / Defect,closed,major,,IPv6,OpenVPN 2.3.12 (Community Ed),"Not set (select this one, unless your'e a OpenVPN developer)",wontfix,IPv6,