Reverse lookup delegation
I see several people asking about PTR records for reverse lookups but I don't see a lot of people asking for reverse lookup delegation. Phone support was less than helpful, so I'm turning here to see if anyone has had any success setting this up.
What I'm trying to do is find out if comcast can refer the reverse lookups to my DNS servers according to one of the methods outlined in RFC 2317. That could be as basic as providing the set of in-addr.arpa addresses in the reverse zone with CNAME records rather than the usual PTR - the CNAME would point to a PTR record in one of my forward zones - or the more complex but perhaps more correct in that the reverse query never leaves the in-addr.arpa tree would be to include in the appropriate in-addr.arpa zone a definition of a sub-zone with NS records.
Either way would be fine as I can set up whatever zones I need to make sure this all ends up working correctly.
Any help is appreciated!