Non Existent Domain

[phn at icke-reklam.ipsec.nu]

Danny Mayer <mayer at gis.net> wrote:

> At 01:24 AM 4/20/02, phn at icke-reklam.ipsec.nu wrote:

>>Kevin Darcy <kcd at daimlerchrysler.com> wrote:
>>
>> > Unless you're using PTR records for some strange purpose, I'd get them ou=
>> > t of
>> > your sinfor.net zone file. Normally PTR records are only found in the
>> > in-addr.arpa namespace.
>>
>>There is one case where PTR is used in the "forward-zone file" and that
>>is when the ISP has delegated a number of ip's to a customer,
>>and CNAMES the PTR to "ip.customers-forward-zone"
>>
>>This way the customer only needs one file where both forward
>>and reverse entries is kept. In fact, those who have used
>>it may say "there is no better way".

> In this case, the PTR records are not even correct.  It's supposed to be

> rev.add.in-addr.arpa. IN PTR host.name.

> instead of looking like A records.

If you see the whole picture you willunderstand :

ISP makes a CNAME for (45) in 66.123.22.45 in their 22.123.66.in-addr.arpa :

45	IN	CNAME	45.customer.net.

And the cuetomer in his zonefile for "customer.net" does

customer.net.	IN	SOA ...
		IN	NS 
		IN	NS
www		IN	A	66.123.22.45


45		IN	PTR	www.customer.net.


Works with bind, all versions, works with ( if anyone should care about it) 
w2k, does not work with NT ( but again, who cares)



>          Danny



-- 
Peter Håkanson         
        IPSec  Sverige      (At the Riverside of Gothenburg, home of Volvo)
           Sorry about my e-mail address, but i'm trying to keep spam out.
	   Remove "icke-reklam" and it works.