Format of the IPv6 reversed zone

[eugene tsuno]

There is a little perl ipv6 calc that I use ipv6calc so I don't mis-typo it.

 ipv6calc --addr_to_ip6arpa 2001:1930:c00::2
No input type specified, try autodetection...found type: ipv6addr
2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.c.0.0.3.9.1.1.0.0.2.ip6.arpa.

The web page is dead, but the ftp download works.
http://mirrors.bieringer.de/www.deepspace6.net/projects/ipv6calc.html#id2860191

and of course one can easily run a script to spit out the reverses.

On 7/28/11 12:31 PM, Khuu, Linh Contractor wrote:
> Thanks Jay and Leonard for the pointers of IPv6 format.
>
> Linh Khuu
>
>
> -----Original Message-----
> From: Jay Ford [mailto:jay-ford at uiowa.edu] 
> Sent: Thursday, July 28, 2011 2:22 PM
> To: Khuu, Linh Contractor
> Cc: 'bind-users at lists.isc.org'
> Subject: Re: Format of the IPv6 reversed zone
>
> On Thu, 28 Jul 2011, Khuu, Linh   Contractor wrote:
>> I'm new to IPv6 configuring in BIND. I need help. The forward zone is
>> simple enough with AAAA record, but the reversed zone is a bit confusing to
>> me.
>>
>> For example, I want to add a hostname of www.example.com to
>> 2001:1930:c00::2. This IPv6 address is /48.
>>
>> How can I add this IPv6 address in a reversed format?
>>
>> $ORIGIN 0.0.0.0.0.0.0.c.0.3.9.1.1.0.0.2.ip6.arpa. IN SOA xxxx.xxxx.xxxx
>>
>> @ NS dnstemp1.example.com
>>
>> What should I put for the PTR???
>>
>> Is the reversed for IPv6 in the ip6.arpa file or IP6.int file???
> It's in ip6.arpa.  The whole name for 2001:1930:c00::2 should be:
>     2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.C.0.0.3.9.1.1.0.0.2.IP6.ARPA
>
> In your origin above you lost a "0" right of the "c".  The ":c00:" chunk is
> actually ":0c00:", so the correct origin is:
>     0.0.0.0.0.0.c.0.0.3.9.1.1.0.0.2.ip6.arpa
> in which the PTR RR would be:
>     2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0	IN	PTR	www.example.com
>
> ________________________________________________________________________
> Jay Ford, Network Engineering Group, Information Technology Services
> University of Iowa, Iowa City, IA 52242
> email: jay-ford at uiowa.edu, phone: 319-335-5555, fax: 319-335-2951
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-- 
eugene tsuno
NOAA Boulder/NOC
325 broadway, boulder,co 80305
303-497-6392