Re: how do I disable IPv6?

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Tue, Feb 27, 2018 at 10:44:56AM -0700, Andy Ruhl wrote:
> On Tue, Feb 27, 2018 at 10:29 AM, Martin Husemann <martin%duskware.de@localhost> wrote:
> > On Tue, Feb 27, 2018 at 05:09:50PM +0000, Steve Blinkhorn wrote:
> >> >From /var/run/dmesg.boot:
> >>
> >> iwn0: DAD detected duplicate IPv6 address fe80:2::2c2:c6ff:fe48:7b0a:
> >> NS in/out=
> >
> > Add to /etc/sysctl.conf:
> >
> > # Disable DAD
> > net.inet6.ip6.dad_count=0
> 
> Isn't the detection of a duplicate link local address a bug? I'm
> trying to think of a reason why it would ever do that normally.

It is. It would be nice if we stopped giving advice to hide such bugs
too. So the device is either seeing its own traffic without expecting it
or something is using the same magic. Both are pretty serious
conditions.

Joerg