IPv4 & IPv6

Igor Sysoev igor at sysoev.ru
Sun Apr 7 06:38:25 UTC 2013

On Apr 7, 2013, at 0:44 , Jim Ohlstein wrote:

> This way there is no competition for what is listening on IPv6 addresses
> and you should not see that error. I've been doing it this way for at
> least a couple of years now, certainly before 1.0.x series came out. It
> may not be the "recommended" approach but it's what I had to do to get
> it back then. One caveat - I am using FreeBSD and IPv6 may be
> implemented differently in GNU/Linux.

On FreeBSD dual stack sockets are disabled by default:

>sysctl net.inet6.ip6.v6only
net.inet6.ip6.v6only: 1

while on Linux they are enabled:

>cat /proc/sys/net/ipv6/bindv6only 

Igor Sysoev

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