4.2.0, ipv6 and pd over ppp0

Aaron Murrihy aaron_m at aaron-m.co.nz
Sun Aug 22 12:02:03 UTC 2010

I have been working with prefix delegation with dhcp-4.1.1, and I
believe (This is the only way I discovered to do it at least) that you
have to add into /sbin/dhclient-script code to add the prefix to a
specified interface, using a simple command like ip -6 addr add
$prefix dev $interface.

If anyone has any other (or better) ideas, I would be very keen to hear them.

On Sat, Aug 21, 2010 at 6:37 AM, Udo van den Heuvel <udovdh at xs4all.nl> wrote:
> On 2010-08-20 18:20, Udo van den Heuvel wrote:
>> I run it like:
>> ./dhclient -6 -P -d -v ppp0
>> I see the client do IA_PD etc and also see a message status code Success.
>> But where does the PD go?
>> Does the client store the Prefix?
>> Assign it to an interface?
>> I did not find a race of such action.
>> Can someone please shine a light on this?
> Hmm. I found this here:
> http://lists.cluenet.de/pipermail/ipv6-ops/2009-December/002769.html
> Bjørn Mork asks the right questions:
> I'm interested in how I
> configure the *client* to request a PD and configure one or more
> interfaces based on that.  The main problem is: How do I tell the client
> that I want to allocate subnet X from the delegated /48 or /56 to
> interface I, and subnet Y from the /48 or /56 to interface J?
> Bonus for some way to trigger radvd to announce a subnet on one or more
> interfaces, and extra bonus for some way to trigger dhclient based on
> received RA flags (don't know if that is feasible as long as the
> autoconf is done by the kernel?).
> Were any of these answered somewhere?
> I.e.: can we actually /use/ `dhclient -6 -P`?
> Kind regards,
> Udo
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