Re: Market forces

[Mikael Abrahamsson <[e-mail]>]

On Mon, 9 Nov 2020, Ted Lemon wrote:

> So all this fuss about how to solve the problem of ISPs only giving out 
> /64s is genuinely premature. Market forces will change their behavior. 
> It’s just a matter of time.

There is an additional requirement here that is also an issue, and that's 
the lack of DHCPv6-PD support in the RG on its LAN interface, to 
sub-delegate any space it might have. This is not very common 
unfortunately, I see people show up weekly on the IRC channels I hang out 
in, with non-working IPv6 because they hooked up their Openwrt router 
behind their ISP router and it didn't support PD (even if there actually 
was a /56 delegated to the ISP-provided RG).

Other vendors also do not support this, one fairly popular brand is 
Ubiquiti that I see a lot of, which doesn't support sub-PD.

>From what I can tell, working as a delegating router within the home is 
not in RFC7084.

I use openwrt at home primarily for this reason, as it does support 
sub-PD.

Unfortunately I don't think normal users will notice the lack of /64 or 
larger within the home. Software vendors will have to work around this 
with IPv4 fallback just like you say, to ensure a good customer 
experience. They will invisibly to the user workaround the problem to hide 
this network deficiency. It'll cost everybody time and money without 
anyone really noticing.

PS. I still remember my first IETF meeting, in Stockholm where I blundered 
at the mic about this and made a fool of myself with a "how hard can it 
be?" comment regarding sub-PD. That was 2009, and we're still not further 
ahead afaik.

-- 
Mikael Abrahamsson    email: [e-mail]