Re: IPv6 uptake (was: The Reg does 240/4)

[Mark Andrews <marka () isc org>]

Well all that shows is that your ISP  is obstructionist. If they can can enter a PTR record or delegate the reverse 
range to you for your IPv4 server they can do it for your IPv6 addresses. In most cases it is actually easier as 
address space is assigned on nibble boundaries (/48, /52, /56, /60, :64) so there isn’t a need to do multiple 
delegations and RFC2317 style “delegations” aren’t needed in IPv6. If there is a non nibble assignment just do multiple 
sequential delegations (2, 4 or 8). 

It isn’t hard to type the reverse prefix into a zone then ns then the name of a server, bump the serial and reload it.

e.g.

e.b.c.2.6.0.7.d.0.2.2.2.ip6.arpa. ns ns1.example.com.

Good luck.

-- 
Mark Andrews

> On 16 Feb 2024, at 04:48, Stephen Satchell <list () satchell net> wrote:
>
> Several people in NANOG have opined that there are a number of mail servers on the Internet operating with IPv6 
> addresses.  OK.  I have a mail server, which has been on the Internet for decades.  On IPv4.
>
> For the last four years, every attempt to get a PTR record in ip6.arpa from my ISP has been rejected, usually with a 
> nasty dismissive.
>
> Today, I'm trying again to get that all-important PTR record.  If I'm successful, then I expect to have my mail 
> server fully up and running in the IPv6 space within 72 hours, or when the DNS changes propagate, whichever is longer.