Re: [v6ops] I-D Action: draft-colitti-v6ops-host-addr-availability-01.txt

Mark Smith <markzzzsmith@gmail.com> Wed, 29 July 2015 03:12 UTC

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From: Mark Smith <markzzzsmith@gmail.com>
Date: Wed, 29 Jul 2015 13:11:41 +1000
Message-ID: <CAO42Z2zPgyS2VAOxAB32wdYVDAX=E2zCmdQhHb-67KVd-MMqdA@mail.gmail.com>
To: Lorenzo Colitti <lorenzo@google.com>
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Cc: IPv6 Operations <v6ops@ietf.org>
Subject: Re: [v6ops] I-D Action: draft-colitti-v6ops-host-addr-availability-01.txt
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On 29 July 2015 at 12:36, Lorenzo Colitti <lorenzo@google.com> wrote:
> On Wed, Jul 29, 2015 at 11:07 AM, Mark Smith <markzzzsmith@gmail.com> wrote:
>>
>> For a laptop style scenario, i.e., numbers of VMs in likely low 1s or
>> no more than 10 to 15, I'd think bridging them onto the existing
>> ethernet network is easier because it is using existing and operating
>> SLAAC, DHCP etc.
>
>
> It is easier, but it will not work on a network that only supports DHCPv6
> and assigns only one IPv6 address per MAC address or per wifi association.

So while not quite as easy to configure as bridging pure bridging,
Linux supports creating virtual ethernet interfaces ("macvlan"
interfaces) that have different MAC addresses, so you could use those
to get more than one address per host, but I get your point.

btw, Fred Baker wrote up a draft a while back which might be useful to
have a read of or reference. He pointed out that multi-homing doesn't
require multiple physical interfaces, so in that sense, what is being
described in this ID is making hosts multi-homed or "more
multi-homed".

"Happier Eyeballs"
https://tools.ietf.org/html/draft-baker-happier-eyeballs-00


Regards,
Mark.