RDNS subdelegation

[Travis Roy]

> If memory recollects: Perhaps 10.20.30.0/25 and 10.20.30.128/25 are two 
> subnets.  10.20.30.129's reverse DNS would look like a CNAME to 
> 129/25.30.20.10.in-addr.arpa or something like that.  Find the RFC and 
> correct what I'm getting wrong, but it really isn't very hard to break up the 
> netblocks.

Yah, I read that too, I'm looking for a bind configuration example of that.