Re: [shim6] IPv6 multihoming

[Brian E Carpenter <brian.e.carpenter@gmail.com>]

Vlad, this is totally off-topic for shim6 so there is
no value in cross-posting.

The problem with IPv6 deployment is nothing to do with getting
address space. It's to do with the reluctance of ISPs, site
managers, and their various vendors to spend resources on this.
This is changing now that IPv4 address exhaustion is imminent
and they are beginning to see a financial argument.

Regards
   Brian Carpenter

On 2010-01-26 11:36, Vlad Ion wrote:
> That would not provide multihoming as much as provide direct access to the
> whole internet in v6 format to anyone deciding to switch to v6 which would
> be a major incentive for a lot of end-users and enterprise clients instead
> of dealing with the few existing islands of v6 and running translation to
> reach the v4 internet. Also I doubt that its a valid statement to say that
> an organization receiving a /48 will still need to announce its smaller v4
> blocks once it starts migrating the end customers to the /48 v6 range. I
> know several organization currently announcing a bunch of /24s and /22s in
> v4 which could easily be replaced by a single /48 in v6.
> 
> 
> BR,
> Vlad
> 
> On Mon, Jan 25, 2010 at 11:34 PM, Brian E Carpenter <
> brian.e.carpenter@gmail.com> wrote:
> 
>> On 2010-01-26 04:54, Andy Davidson wrote:
>>> On 25/01/2010 08:55, Vlad Ion wrote:
>>>> I propose that the 6to4 ip conversion space from ipv4 addresses to
>>>> 2002::ipv6 space will be redefined as provider independent address
>>>> space. This way whoever wants to implement ipv6 with multi-homing can
>>>> simply redefine their existing IPv4 addresses in IPv6 6to4 format and
>>>> have multi-homing in ipv6.
>>> Sorry, this scares me.
>> Well yes. Let's try a thought experiment that doesn't break 6to4:
>>
>> Proclaim that everyone who has a valid global IPv4 prefix owns
>> the PI IPv6 prefix 4444:V4ADDR::/48.
>>
>> Then we have automatically imported all 318333 IPv4 prefixes
>> (according to routeviews) into IPv6.
>>
>> I'm not quite sure how this would provide multihoming.
>>
>>    Brian
>>
>>
>>> It is not difficult to get IPv6 PI from the RIRs I have experience with.
>>>
>>> For example, in Europe, obtaining a single /48 IPv6 PI is a quick
>>> process.  Obtaining it in this way means that unused v4 is not recycled
>>> as spoofable v6, and that organisations with tens of v4 unjoined
>>> prefixes need not announced tens of unjoined v6 prefixes when they
>> migrate.
>>> I commend you for thinking about ways to encourage networks to adopt v6,
>>> but I think that education and advocacy is more future-proof than
>>> migrating the v4 swap to v6.
>>>
>>> Andy
>>>
>>>
>>
> 
> 
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