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[cobalt-users] rdns, uneven blocks, PTR records, blocks smaller than CLASS C BLOCK
- Subject: [cobalt-users] rdns, uneven blocks, PTR records, blocks smaller than CLASS C BLOCK
- From: "Cobalt User" <cobalt-users@xxxxxxxxxxxxxx>
- Date: Mon Jan 28 10:04:10 2002
- List-id: Mailing list for users to share thoughts on Cobalt products. <cobalt-users.list.cobalt.com>
has anyone successfully setup reverse dns to a block smaller than a /24
(class c) using a raq for the nameserver
i got my isp to delegate me reverse dns authority for my /26 (64 addresses)
this block will be added into my raq that i am using as a nameserver for
reverse resolution
let's say the block is 192.168.1.192/26 (192 to 255, 193 to 254 usable)
lets say xx represents a number from 193 to 254 for the scope of this
document
since this is not an even 8, 16, or 24 bit ip cidr block (old class a,b,c) ,
they did it as tt.1.168.192.in-addr.arpa
where tt are actual letters 'tt', nn.nn.nn is my ip block first three
components, since there are other subscribers within the same C BLOCK they
can't delegate me the whole C BLOCK
each xx.1.168.192.in-addr.arpa in their dns table is CNAMEd to
xx.tt.1.168.192.in-addr.arpa on their end
they listed me as the name server for tt.1.168.192.in-addr.arpa
i tried to manually create a zone 192-26.tt.1.168.192.in-addr.arpa and the
raq deleted it upon reboot
i tried to manually enter 192.168.1.tt.xx into reverse dns ptrs in the gui
but it won't take it, wants all numbers
when i do a dig on an ip within the block from a workstation it pulls up the
cname but still tries to use their NS instead of the NS delegated for the
tt.1.168.192.in-addr.arpa block
would appreciate pointers (no pun intended) from anyone having experience
with this
-----------
thanks,
Jon