Re: [Autoconf] Using DHCPv6 without link-local? Support only EUI-64interfaces?

Ulrich Herberg <ulrich@herberg.name> Tue, 03 August 2010 08:28 UTC

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Date: Tue, 3 Aug 2010 10:28:59 +0200
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From: Ulrich Herberg <ulrich@herberg.name>
To: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
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Subject: Re: [Autoconf] Using DHCPv6 without link-local? Support only EUI-64interfaces?
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Hi Henning,

On Tue, Aug 3, 2010 at 7:25 AM, Henning Rogge
<henning.rogge@fkie.fraunhofer.de> wrote:
> Hello,
>
> is there a reason why we cannot place an DHCPv6-relay on every node for its
> neighbors ? Each node requesting an address/prefix will send out an IP
> datagram with an anycast destination an a linklocal source, which will be
> forwarded by its neighbors (with a unicast) to the DHCPv6-server.

Sure, that works. DHCP clients would typically send their messages to
the All_DHCP_Relay_Agents_and_Servers multicast address. However, that
necessitates the use of a unicast routing protocol, because the relay
has to have a route towards the DHCP server. The question is, do we
want to depend on that? I think we should also have a running autoconf
mechanism in cases when there is no unicast routing protocol in place.

Ulrich



> After a node has it's address it switch from DHCP-client to DHCP-relay mode,
> to allow other nodes to connect through this node to the server.
>
> Henning Rogge
>
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