From: Ben Greear <greearb@candelatech•com>
To: "Bjørn Mork" <bjorn@mork•no>
Cc: Dan Williams <dcbw@redhat•com>, netdev <netdev@vger•kernel.org>
Subject: Re: How is IPv6 dhcp supposed to work?
Date: Wed, 18 Jun 2014 07:17:48 -0700 [thread overview]
Message-ID: <53A19F8C.6060505@candelatech.com> (raw)
In-Reply-To: <87ha3isdu6.fsf@nemi.mork.no>
On 06/18/2014 03:37 AM, Bjørn Mork wrote:
> Ben Greear <greearb@candelatech•com> writes:
>
>> Does that router advert below look proper?
>
> No, it doesn't. How did you create this?
With a radvd config with this section in it:
interface rddVR2
{
AdvSendAdvert on;
IgnoreIfMissing on;
MinRtrAdvInterval 30;
MaxRtrAdvInterval 100;
prefix 2001:78::1/64
{
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
route ::/0 {
};
};
I'll try changing it to zero out the low 64-bits....
> Quoting RFC 4861 (http://tools.ietf.org/html/rfc4861#section-4.6.2 ):
>
> Prefix An IP address or a prefix of an IP address. The
> Prefix Length field contains the number of valid
> leading bits in the prefix. The bits in the prefix
> after the prefix length are reserved and MUST be
> initialized to zero by the sender and ignored by
> the receiver.
>
>
> So that prefix should have been '2001:78::'
>
> Note that you don't necessarily need to include a prefix option in the
> RA. If you don't want clients on the link connected to the router to
> communicate directly on L2. This is the typical ISP use case.
I just want the 'rddVR2' interface to effectively give out it's own
IPv6 addr as the default IPv6 gateway for anything connected to rddVR2,
and I want the 'rddVR3' interface (this is a veth pair, by the way)
to use that IPv6 addr as it's gateway.
To answer another question in this thread: Yes, accept_ra is 1, and
I checked the other pertinent procfs values and they are correct for
my desired behaviour as far as I can tell.
Thanks,
Ben
--
Ben Greear <greearb@candelatech•com>
Candela Technologies Inc http://www.candelatech.com
prev parent reply other threads:[~2014-06-18 14:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-17 21:41 How is IPv6 dhcp supposed to work? Ben Greear
2014-06-17 22:34 ` Dan Williams
2014-06-17 23:16 ` Ben Greear
2014-06-18 8:18 ` Nicolas Dichtel
2014-06-18 10:37 ` Bjørn Mork
2014-06-18 11:43 ` Hagen Paul Pfeifer
2014-06-18 13:43 ` Dan Williams
2014-06-18 14:49 ` Ben Greear
2014-07-01 21:22 ` Eric W. Biederman
2014-06-18 14:17 ` Ben Greear [this message]
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