turning on comcast v6

Mark Andrews marka at isc.org
Thu Dec 12 01:11:35 UTC 2013


In message <CAKr6gn11nLzELbeMKksWAZuR6Tm0A6_kSsJDeF3d=9_N6p0ijA at mail.gmail.com>
, George Michaelson writes:
> 
> I am probably closer to consumer behaviour at home than most of you. I
> don't regard my home router as a vehicle for hackery beyond clue I can find
> on the end user public lists and rarely if ever even apply that, and I run
> stock factory billion code on my billion ADSL2+ home gateway.
> 
> I just enabled the ADSL2+ profile which had IPv6 and restarted. It came up
> immediately with a /56 and I haven't touched it since. I have been using it
> to SSH back home quite comfortably with an almost unmodified ACLset to
> permit port 22 inbound.
> 
> This is on Internode, in Australia.
> 
> So, while I fully acknowledge the reality is that for a lot of people,
> cable and other complex head-end systems needed change and the experience
> of going dual-stack can be painful, I want to assert IT DOESNT HAVE TO BE
> and I am proof by example
> 
> It just worked.

And it should "just work" if you have two router daisy chained.  PD
was designed to allow this to work.  The home router vendors had
all the protocols required to make it work.  They choose not to
implement a working solution.

It isn't that hard to supply a take a PD request on one interface
and make a upstream request if you don't have unassigned space to
hand out then return the response add routing table entries to keep
it all working.

One can do more complicated stuff than that like running a routing
protocol but static routes also work.  It may not be optimal but
there was nothing stopping those other vendors from coding the
support.

Most home routers already do stuff like that in IPv4 for DNS servers
and other protocol elements.  They take what they have learnt from
upstream as supply it downstream.

Mark

> On Thu, Dec 12, 2013 at 8:01 AM, Mark Andrews <marka at isc.org> wrote:
> 
> >
> > In message <A026246E-F884-47F0-9225-AFAA87CD35B1 at steffann.nl>, Sander
> > Steffann
> > writes:
> > > Hi,
> > >
> > > Op 11 dec. 2013, om 20:46 heeft Kinkaid, Kyle <kkinkaid at usgs.gov> het
> > > volgende geschreven:
> > > > I'm curious, do you know of a consumer-grade router which supports
> > > > DHCPv6-PD?
> > >
> > > I have tested a whole bunch of them more than a year ago. I can remember
> > > seeing IPv6 DHCPv6-PD client support on gear from AVM Fritz!box, D-Link,
> > > Draytek, Zyxel, Linksys, Asus, Thompson/Technicolor and I must be
> > > forgetting a few as well. Most of them weren't very advanced, but they
> > > worked to get IPv6 connectivity in the house. What I am missing these
> > > days is DHCPv6-PD server support to re-delegate parts of the prefix it
> > > got from the ISP downstream to other home routers. As far as I know AVM
> > > Fritz!box is the only one that does that today.
> >
> > And the need for it was obvious when all the other boxes were being
> > developed.  Daisy chaining routers has been part of home setups for
> > many, many years if only to get configuration control because the
> > ISP router is not configurable enough.  There was no reason to think
> > that this would change with IPv6.
> >
> > > Cheers,
> > > Sander
> > --
> > Mark Andrews, ISC
> > 1 Seymour St., Dundas Valley, NSW 2117, Australia
> > PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org
> >
> >
> 
> --047d7b10ccc3ea2d0c04ed4a023d
> Content-Type: text/html; charset=ISO-8859-1
> Content-Transfer-Encoding: quoted-printable
> 
> <div dir=3D"ltr">I am probably closer to consumer behaviour at home than mo=
> st of you. I don't regard my home router as a vehicle for hackery beyon=
> d clue I can find on the end user public lists and rarely if ever even appl=
> y that, and I run stock factory billion code on my billion ADSL2+ home gate=
> way.<div>
> <br></div><div>I just enabled the ADSL2+ profile which had IPv6 and restart=
> ed. It came up immediately with a /56 and I haven't touched it since. I=
>  have been using it to SSH back home quite comfortably with an almost unmod=
> ified ACLset to permit port 22 inbound.</div>
> <div><br></div><div>This is on Internode, in Australia.</div><div><br></div=
> ><div>So, while I fully acknowledge the reality is that for a lot of people=
> , cable and other complex head-end systems needed change and the experience=
>  of going dual-stack can be painful, I want to assert IT DOESNT HAVE TO BE =
> and I am proof by example</div>
> <div><br></div><div>It just worked.</div></div><div class=3D"gmail_extra"><=
> br><br><div class=3D"gmail_quote">On Thu, Dec 12, 2013 at 8:01 AM, Mark And=
> rews <span dir=3D"ltr"><<a href=3D"mailto:marka at isc.org" target=3D"_blan=
> k">marka at isc.org</a>></span> wrote:<br>
> <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
> x #ccc solid;padding-left:1ex"><br>
> In message <<a href=3D"mailto:A026246E-F884-47F0-9225-AFAA87CD35B1 at steff=
> ann.nl">A026246E-F884-47F0-9225-AFAA87CD35B1 at steffann.nl</a>>, Sander St=
> effann<br>
> writes:<br>
> <div><div class=3D"h5">> Hi,<br>
> ><br>
> > Op 11 dec. 2013, om 20:46 heeft Kinkaid, Kyle <<a href=3D"mailto:kk=
> inkaid at usgs.gov">kkinkaid at usgs.gov</a>> het<br>
> > volgende geschreven:<br>
> > > I'm curious, do you know of a consumer-grade router which sup=
> ports<br>
> > > DHCPv6-PD?<br>
> ><br>
> > I have tested a whole bunch of them more than a year ago. I can rememb=
> er<br>
> > seeing IPv6 DHCPv6-PD client support on gear from AVM Fritz!box, D-Lin=
> k,<br>
> > Draytek, Zyxel, Linksys, Asus, Thompson/Technicolor and I must be<br>
> > forgetting a few as well. Most of them weren't very advanced, but =
> they<br>
> > worked to get IPv6 connectivity in the house. What I am missing these<=
> br>
> > days is DHCPv6-PD server support to re-delegate parts of the prefix it=
> <br>
> > got from the ISP downstream to other home routers. As far as I know AV=
> M<br>
> > Fritz!box is the only one that does that today.<br>
> <br>
> </div></div>And the need for it was obvious when all the other boxes were b=
> eing<br>
> developed. =A0Daisy chaining routers has been part of home setups for<br>
> many, many years if only to get configuration control because the<br>
> ISP router is not configurable enough. =A0There was no reason to think<br>
> that this would change with IPv6.<br>
> <br>
> > Cheers,<br>
> > Sander<br>
> <span class=3D"HOEnZb"><font color=3D"#888888">--<br>
> Mark Andrews, ISC<br>
> 1 Seymour St., Dundas Valley, NSW 2117, Australia<br>
> PHONE: <a href=3D"tel:%2B61%202%209871%204742" value=3D"+61298714742">+61 2=
>  9871 4742</a> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 INTERNET: <a href=3D"mailto:=
> marka at isc.org">marka at isc.org</a><br>
> <br>
> </font></span></blockquote></div><br></div>
> 
> --047d7b10ccc3ea2d0c04ed4a023d--
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org



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