turning off IPv6 support in BSD

David Jenkins david.jenkins at gmail.com
Sun Nov 21 08:23:40 PST 2004


On Sun, 21 Nov 2004 09:58:39 -0500, Michael W. Oliver
<michael at gargantuan.com> wrote:
> On 2004-11-21T11:01:09+0000, David Jenkins wrote:
> 
> 
> > On Sun, 21 Nov 2004 12:27:19 +0200, Panagiotis Christias
> > <christias at gmail.com> wrote:
> > > On Sun, 21 Nov 2004 03:59:23 +1100, andrew clarke <mail at ozzmosis.com> wrote:
> > >
> > >
> > > > On Sat, Nov 20, 2004 at 04:50:58PM +0000, Danny Browne wrote:
> > > >
> > > > > How do i turn off IPv6 support in FreeBSD 4.10?
> > > >
> > > > Remove "options INET6" from your kernel config file
> > > > (/sys/i386/conf/XXX), rebuild your kernel and reboot your machine.
> > > >
> > > > There may be a way to turn it off at runtime using sysctl, but I don't
> > > > know what it is, and in hindsight it probably wouldn't make much sense
> > > > to do that at runtime, although I'm willing to be convinced otherwise. :)
> > > >
> > > > Regards
> > > > Andrew
> > >
> > > You can also comment out the 'ipv6_enable="YES"' line in /etc/rc.conf.
> >
> > I just ensured my rc.conf didn't have
> >
> > ipv6_enable="YES"
> >
> > dropped to single user mode and came back up and it appears there is
> > still support for IPv6
> 
> ipv6_enable="YES" is defined in /etc/defaults/rc.conf, so you have to
> define ipv6_enable="NO" in /etc/rc.conf to realize any change.

Not on my system (RELENG_5_3)...

# cat /etc/defaults/rc.conf | grep ipv6_enable
ipv6_enable="NO"                # Set to YES to set up for IPv6.

David


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