On Sat, Apr 01, 2017 at 02:46:53AM -0700, Ori Bernstein wrote:
> On Sat, Apr 01, 2017 at 08:36:55PM +1100, Bruce Ellis wrote:
> > Does anyone know what IPV6 addresses like fec0:0:0:ffff%1 mean and how to
> > make a real (plan9) IPV6 address from them.
> >
> > Regards.
> >
> > brucee
>
> The portion before the '%' is a plain old (link local) ipv6 address. The
> part after the '%' is a zone id. It's safe to ignore.
>
> Because link local addresses share prefixes, they may need to be told
> what interface to come out of. They can be ignored safely enough, or if
> you want you use an arbitrary string like 'fe80::%/net.alt' as the zone.
>
>

Careful.  fec0: is site-local, not link-local, which is fe80:.  I've
never seen a zone ID attached to a site-local address;  I thought the
zone shit was introduced at the same time they deprected the site-local
addresses...

ipv6 is a shitshow.  Cursory inspection of relevant RFCs does not lead
to clarity.  Godspeed.

khm