Reverse DDNS on classless zones

[Simon Hobson]

Subject fixed, surplus quoted stuff trimmed, and bottom posting ...


atif yameen wrote:

>Thanks for the reply. I have gone through the rfc 2317. I do have 
>all the cnames required in the right format in my parent zone, i.e. 
>129.119/16. The issue is with DHCP not registering the record in the 
>right format. it does register it in the right zone but not the 
>right format.

It won't do, and never will.
The DHCP server will do exactly one thing - reverse the octets and 
append the zone specified. It does not understand the rfc2317 bodgery 
and is never likely to. So for a client w.x.y.z, the DHCP server will 
never set the reverse DNS for anything but z.y.x.w.<something>. 
<something> defaults to in-addr.arpa, but as you've realised this can 
be changed.

So I'd suggest forgetting about the RFC2317 format. Just set yoursefl 
up a zone like y.x.w.reverse.b.com, set ddns-rev-domainname to 
reverse.b.com, and set your CNAMEs to point to 
128.y.x.w.reverse.b.com, 129.y.x.w.reverse.b.com, and so on.

-- 
Simon Hobson

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