0.0.0.in-addr.arpa

[D. Stussy]

"Scott Baker" <bakers at web-ster.com> wrote in message
news:g2ju8d$s9r$1 at sf1.isc.org...
> We have some equipment (on our internal network) that seems to be query an
> internal DNS server for 0.0.0.0-in-addr.arpa. Is there any valid reason it
> should be looking this up? This is not an Internet application, so I'm
> wondering if it's used for some other use I'm not aware of.

Do you have any hosts that don't know their IP address when they boot (i.e.
DHCP is used)?

Before they know their identity, they use 0.0.0.0 (or :: if IPv6) until they
learn who they are.

For the lookup to occur, you must have something else that's watching the
network and seeing this.