IPv6 reverse
William F. Maton Sotomayor
wmaton at ryouko.imsb.nrc.ca
Sat Dec 26 16:08:08 UTC 2009
On Sat, 26 Dec 2009, Julien ÉLIE wrote:
> I do not manage to reverse IPv6 addresses. For instance:
> nnrpd[17962]: ? reverse lookup for 2001:41d0:1:6d44::1 failed: reverse lookup
> validation failed -- using IP address for access
quetzal 329# dig soa 0.d.1.4.1.0.0.2.ip6.arpa
;
;; ANSWER SECTION:
0.d.1.4.1.0.0.2.ip6.arpa. 86400 IN SOA dns15.ovh.net.
tech.ovh.net. 2009122601 43200 4320 2419200 86400
;; AUTHORITY SECTION:
0.d.1.4.1.0.0.2.ip6.arpa. 86400 IN NS ns15.ovh.net.
0.d.1.4.1.0.0.2.ip6.arpa. 86400 IN NS dns15.ovh.net.
OK, ovh.net 'owns' the reverse for that.....
> Yet, it seems to be properly defined:
>
> % 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?
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.
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37285
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;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.
IN A
;; 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?
> % host news.trigofacile.com
> news.trigofacile.com has address 91.121.26.68
> news.trigofacile.com has IPv6 address 2001:41d0:1:6d44::1
quetzal 336# dig any +short news.trigofacile.com
2001:41d0:1:6d44::1
91.121.26.68
Yup, I agree that looks good.
> Maybe I have an issue with my system configuration? (Debian Etch)
DNS issue most likely...
wfms
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