IPv6 and DNS for the residential service provider

[Philipp Kern]

On Tue, Sep 25, 2012 at 03:05:55PM +0200, Jeroen Massar wrote:
> On 2012-09-25 13:44, Philipp Kern wrote:
> > On Tue, Sep 25, 2012 at 01:36:28PM +0200, Jeroen Massar wrote:
> >> On 2012-09-25 11:44, Ole Trøan wrote:
> >>> there is a recurring question being asked though... and that is "do
> >>> we really need reverse DNS for IPv6?"
> >> Yes, because IPv6 addresses look really ugly in 'who' output...
> > Then we should fix the tools.
> The tools use this standardized lookup under ip6.arpa...

What does that have to do with your remark? The IPv6 addresses look
really ugly in 'who' and 'last' output because they're insanely
truncated:

pkern    pts/1        2012-09-18 12:20 (2001:S.0)
pkern    pts/1        2001:470:720c:0: Tue Sep 25 15:15   still logged in   

That also affects normal DNS names. I'm saying that we should fix the
tools to record the addresses correctly in the first place before trying
to fix them to display a truncated "foobar.some.dom" instead. There
might be more significant meaning in the front due to how the DNS name
is structured.  But saying "we really need reverse DNS because we don't
manage to even display the IPv6 subnet in 'who'" seems a bit bogus to
me.

Kind regards
Philipp Kern