feature request for dig
Pete Ehlke
pde at ehlke.net
Tue Jul 23 16:08:21 UTC 2002
On Tue, Jul 23, 2002 at 10:34:06AM -0400, chris wrote:
>
> I was trying to test some classless delegation stuff, and noticed I can't
> do this with dig:
>
> $ dig -x 192.168.1.0-63.1
> Invalid IP address 192.168.1.0-63.1
>
> so best I can do is do an axfr for 1.168.192.in-addr.arpa. and look for
> my entry, but I might not always be so lucky. Any reason dig can't just
> try it, even if it looks like it's not an IP?
Well, because dig -x takes a valid IP address and constructs a PTR query
in the appropriate in-addr.arpa zone for it. If you don't have a valid
IP address, you can't construct a valid PTR query.
The correct way to do what you're looking for is:
dig 1.0-63.1.168.192.in-addr.arpa PTR
-Pete
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