[Kea-users] fe80::

[Jason Guy]

Fred,

It looks like you are referring to RFC 6939 (Client Link-Layer Address
Option). Looks like the sequence of events for this are nicely shown here
<https://en.wikipedia.org/wiki/DHCPv6#RFC_6939_-_Client_Link-Layer_Address_Option>.
This means Kea would need to listen to the FF02::1:2, All-dhcp-agents
multicast address defined in RFC3315. So the client will need to send to
this address as well. I have never tried this, but perhaps this specific
feature is not yet supported in Kea.

Cheers,
Jason


On Wed, Jul 12, 2017 at 12:44 PM, Templin, Fred L <Fred.L.Templin at boeing.com
> wrote:

> Thanks Francis. I asked the question on the 6man list regarding whether
> fe80::
> is indeed considered a subnet router anycast address and got two different
> answers (yes and no) with no conclusions.
>
> I know that when I assign the address fe80:: to a linux eth interface and
> then
> ping6 to fe80:: from a different linux node, the ping6 succeeds and fe80::
> is
> used as the destination address of echo requests and the source address
> of echo replies. But, last time I tried using fe80:: as the source address
> of
> a DHCPv6 Solicit to the kea server it didn't work.
>
> I will try again when I get a chance but just wanted to check to see if
> there
> is some obvious restriction in kea.
>
> Thanks - Fred
>
>
> > -----Original Message-----
> > From: Francis Dupont [mailto:fdupont at isc.org]
> > Sent: Wednesday, July 12, 2017 9:36 AM
> > To: Templin, Fred L <Fred.L.Templin at boeing.com>
> > Cc: kea-users at lists.isc.org
> > Subject: Re: [Kea-users] fe80::
> >
> > I don't think Kea does something special with fe80:: but kernels should
> > as it is the any router anycast address, so illegal as a source
> address...
> >
> > Regards
> >
> > Francis Dupont <fdupont at isc.org>
>
>
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