bind classless slave from microsoft dns classful SOA?

Doug Barton dougb at
Mon Jul 15 01:03:18 UTC 2013

On 07/12/2013 09:09 AM, Michael Hare wrote:
> Bind-users;
> I have been asked to slave a /24 from a microsoft SOA, however, their
> authority for the /24 is false in that they really only have authority
> to 192/26.
> Am I correct in that there is no way to slave said zone
> [] but serve it as a different zone
> [192/] without relying on some outside scripts to
> do the translation?

You should probably confer with the admin of the auth server to 
determine precisely what their version of the zone is (if you haven't 
already queried the master server to determine it for yourself). 
Miscommunication about the zone names for 2317 zones are rather common. 
Unless you've been told by the parent admin that the zone is precisely 
192/26.* do not assume that is the case. There are a number of ways to 
represent 2317 zones.

Good luck,


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