IPv6 reverse

[Julien ÉLIE]

Hi William,

Thanks for your answer.
However, there is something I do not understand:  why would it work with IPv4
and not with IPv6?  (the same dig with IPv4 shows similar results)


>> % host 2001:41d0:1:6d44::1
>> 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.4.d.6.1.0.0.0.0.d.1.4.1.0.0.2.ip6.arpa
>> domain name pointer news.trigofacile.com.
>
> Perhaps locally yes....but I see reverse delegation for the subnet doesn't
> go further?

It also works from another server (situated in another network).

The whole 2001:41D0:1:6D44::/64 belongs to me.


> quetzal 334# dig
> 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.4.d.6.1.0.0.0.0.d.1.4.1.0.0.2.ip6.arpa.
>
> ;; AUTHORITY SECTION:
> 0.d.1.4.1.0.0.2.ip6.arpa. 10797 IN      SOA     dns15.ovh.net.
> tech.ovh.net. 2009122601 43200 4320 2419200 86400
>
> It's not resolving.  Maybe the admins at ovh.net can put that there for
> you?

Neither does it resolve in IPv4:

% dig 68.26.121.91.in-addr.arpa

;; QUESTION SECTION:
;68.26.121.91.in-addr.arpa.     IN      A

;; AUTHORITY SECTION:
26.121.91.in-addr.arpa. 10800   IN      SOA     dns.ovh.net. tech.ovh.net. 2009122500 43200 4320 2419200 86400


Yet, I asked them to add a reverse for 91.121.26.68 and 2001:41d0:1:6d44::1
which appears correctly with "host":

% host 91.121.26.68
68.26.121.91.in-addr.arpa domain name pointer news.trigofacile.com.
% host 2001:41d0:1:6d44::1
1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.4.d.6.1.0.0.0.0.d.1.4.1.0.0.2.ip6.arpa domain name pointer news.trigofacile.com.

So they did something; otherwise it would not appear, wouldn't it?


The same result is given for your domain:

% host 2001:410:9000:127::10
0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.2.1.0.0.0.0.9.0.1.4.0.1.0.0.2.ip6.arpa domain name pointer ryouko.imsb.nrc.ca.

% dig 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.2.1.0.0.0.0.9.0.1.4.0.1.0.0.2.ip6.arpa
;; QUESTION SECTION:
;0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.2.1.0.0.0.0.9.0.1.4.0.1.0.0.2.ip6.arpa. IN A

;; AUTHORITY SECTION:
0.0.0.9.0.1.4.0.1.0.0.2.ip6.arpa. 10800 IN SOA  dns1.nrc.ca. dns-admin.nrc.ca. 2009122607 10800 1800 604800 86400


Would it also fail to resolve if you post an article in IPv6 via nnrpd?

-- 
Julien ÉLIE

« En vérité, le chemin importe peu, la volonté d'arriver suffit à tout. »