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Re: [v6ops] New Version Notification for draft-hilliard-v6ops-host-addr-update-00.txt

Lorenzo Colitti <lorenzo@google.com> Thu, 20 July 2017 09:43 UTC

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From: Lorenzo Colitti <lorenzo@google.com>
Date: Thu, 20 Jul 2017 11:42:56 +0200
Message-ID: <CAKD1Yr1oSB9CH1KBVrAgePAkNVsb0ZHKOTywoUmDQPHtwEp3_w@mail.gmail.com>
To: "Bernie Volz (volz)" <volz@cisco.com>
Cc: Tore Anderson <tore@fud.no>, james woodyatt <jhw@google.com>, IPv6 Operations <v6ops@ietf.org>
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Subject: Re: [v6ops] New Version Notification for draft-hilliard-v6ops-host-addr-update-00.txt
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On Thu, Jul 20, 2017 at 11:23 AM, Bernie Volz (volz) <volz@cisco.com> wrote:

> >> What if the topology change was such that the global address of the
> DHCPv6 server is no longer valid due to renumbering?
>
> Address of DHCPv6 server does not matter - it can change. Clients
> generally never directly address packets to its address. They multicast to
> fe02::1:2.
>

Surely the RECONFIGURE is not multicast, but unicast from server to client?


> Also, 3315bis recommends that clients refresh information via dhcp when a
> network change occurs (such as new prefixes in an RA appear).
>

3315bis-09 does not recommend this, it says the client MAY do it and MUST
rate-limit it (with an example rate-limit of one every 30 seconds).

In any case, the server still needs to keep track of all topology changes
in order to give a correct answer.

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