From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <20170401100605.GB18054@wopr> References: <20170401094653.GC54181@oneeye> <20170401100605.GB18054@wopr> From: Bruce Ellis Date: Sat, 1 Apr 2017 21:10:37 +1100 Message-ID: To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: multipart/alternative; boundary=001a114a902a3c1bfa054c182369 Subject: Re: [9fans] IPV6 Topicbox-Message-UUID: b85a4084-ead9-11e9-9d60-3106f5b1d025 --001a114a902a3c1bfa054c182369 Content-Type: text/plain; charset=UTF-8 A shitshow is an apt description. I searched hard for an answer to my question. Regards, brucee On 1 April 2017 at 21:06, Kurt H Maier wrote: > 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 > > --001a114a902a3c1bfa054c182369 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
A shitshow is an apt description. I searched hard for an a= nswer to my question.

Regards,

= brucee

On 1 April 2017 at 21:06, Kurt H Maier <khm@sciops.net> wrote:=
= 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 an= d how to
> > make a real (plan9) IPV6 address from them.
> >
> > Regards.
> >
> > brucee
>
> The portion before the '%' is a plain old (link local) ipv6 ad= dress. 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<= br> > what interface to come out of. They can be ignored safely enough, or i= f
> you want you use an arbitrary string like 'fe80::%/net.alt' as= the zone.
>
>

Careful.=C2=A0 fec0: is site-local, not link-local, which is fe= 80:.=C2=A0 I've
never seen a zone ID attached to a site-local address;=C2=A0 I thought the<= br> zone shit was introduced at the same time they deprected the site-local
addresses...

ipv6 is a shitshow.=C2=A0 Cursory inspection of relevant RFCs does not lead=
to clarity.=C2=A0 Godspeed.

khm


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