PTR record handling in a subnetted network

[David Tonhofer]

Question by David Tonhofer:

> Question: *Who* says that
> 
> "225.217.154.194.in-addr.arpa. 68781 IN  CNAME
> 225.224.217.154.194.in-addr.arpa."
> 
> because it's definitely not my nameserver...is it?

Answer by Mark Andrews:

>	217.154.194.in-addr.arpa.  23h58m49s IN NS  ns2.pt.lu.
>	217.154.194.in-addr.arpa.  23h58m49s IN NS  ns1.pt.lu.
>
>	Actually you should also be serving 217.154.194.in-addr.arpa so
>	that when your connection goes down you can resolve your addresses
>	locally.  Make yourself a slave for 217.154.194.in-addr.arpa.

...All right! After thinking about this I actually was *enlightened*.
And now I also know why my network went south when the P&T nameservers
went down. *Kiss*!

Thanks Mark!