Re: [**EXTERNAL**] Re: the race to the bottom problem

[Ca By <[e-mail]>]

On Fri, Nov 6, 2020 at 3:17 PM Mark Smith <[e-mail]> wrote:

>
>
> On Sat, 7 Nov 2020, 07:09 Brian E Carpenter, <[e-mail]>
> wrote:
>
>> On 07-Nov-20 03:30, Mudric, Dusan wrote:
>> > Would it help if the problem statemen clarifies that:
>> >
>> > - There is no race to the bottom. We are not trying to solve ISP
>> problem by allowing longer than 64bit prefixes,
>>
>> Unfortunately, once you push code allowing >64 subnet prefixes for SLAAC
>> into the wild, you do automatically give ISPs a path to to allocating
>> longer prefixes to customers, and all history tells us that some of them
>> will follow that path.
>>
>> Once that code is out there, the race to the bottom is enabled.
>>
>
>
> The current bottom is a single /64.
>
> Any provider who is only giving out a single /64 to customers who might or
> will need more than one /64 has already raced to the current bottom.
>
> A "deeper bottom" or longer default allowed prefix length will just
> facilitate further racing to the deeper bottom. It won't encourage giving
> out more than one /64 for those who might need them; it'll do the opposite.
>
> The pain should to be put where it is caused, onto the providers who
> should be giving out multiple /64s to their customers.
>
> Regards,
> Mark.
>

Why are the isps not giving more than one 64 ?

Is it because the ietf made it hard and dhcp-pd is unworkable , especially
in mobile ?

Yes

So what will the  ietf do? Well, we had multiple solutions that are
equivalent to cutting off one’s nose to spite the face


CB

>
>
>
>> Even draft-bourbaki-6man-classless-ipv6 doesn't recommend changing the
>> /64 default for SLAAC. (If it did, my name would not be on that draft.)
>>
>>    Brian
>>
>> --------------------------------------------------------------------
>> IETF IPv6 working group mailing list
>> [e-mail]
>> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
>> --------------------------------------------------------------------
>>
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> [e-mail]
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------
>