Failover IPv6 with multiple PA prefixes (Was: IPv6 fc00::/7 - Unique local addresses)

Sun Oct 31 19:01:40 UTC 2010

On Oct 31, 2010, at 10:58 AM, Matthew Petach wrote:

> On Sun, Oct 31, 2010 at 10:26 AM, Matthew Kaufman <matthew at matthew.at> wrote:
>> On 10/31/2010 9:31 AM, Owen DeLong wrote:
>>> If you have PI space, changing providers can be even easier and you can
>>> leave
>>> multiple providers running in parallel.
>> 
>> That's a big IF, given the above. He doesn't qualify for PI space, thanks to
>> ARIN policies set by people who want routing tables to stay as small as
>> possible, so PI space to be as difficult as possible to obtain for people
>> like him.
> 
> Would it help if ARIN's policies were changed to allow anyone and everyone
> to obtain PI space directly from them (for the appropriate fee, of course), and
> then it was left up to the operating community to decide whether or not to
> route the smaller chunks of space?
> 
I really don't expect this to be as much of an issue in IPv6.

> Right now, we're trying to keep the two communities somewhat in alignment,
> so that when people obtain IP space, they have a relatively good feeling about
> it being routed correctly.  If we let the ARIN policies stray too far
> from what the
> router operators can/will accept, we're going to end up with an ugly, fragmented
> internet in which organizations are given PI GUA space, only to
> discover it's not
> actually useful for reaching large swaths of the internet.
> 
PI GUA is at least as useful in that context as ULA.

> I'd hazard a guess that people would consider that to be a worse scenario
> than the one in which we limit who can get PI space so that there's a reasonably
> good probability that when the space is issued and announced via BGP, it will be
> reachable from most of the rest of the internet...that is to say, our
> current modus
> operandi.
> 
Not if they are turning to ULA.

Owen