On Fri, 11 Mar 2005 13:48:05 -0000, Dave Korn <[EMAIL PROTECTED]> wrote: > "TheGesus" wrote in message news:[EMAIL PROTECTED] > > On this subject (marginally), last year we moved a rather large CIDR > > block from one ISP to another. > > > > The new ISP took it upon themselves to give *ALL* our unused IP > > addresses a bogus reverse lookup in the (general) format of > > > > 10.20.30.40.abc.domain.com > > > > No one asked them to do this (or, at least if they did, they won't > > admit to it), and none of the reverse lookups can be looked up > > "forwardly". > > > > Is this a common practice? It doesn't seem like a good idea, but the > > ISP insisted it was a "value-added" service. In my opinion, a dead > > address should remain dead. > > It's common. ISPs don't want to have to update their DNS records with > every single client that logs on or off their network, that would be a lot > of churn and general overhead for no great purpose.
A lot of churn and general overhead? Configure them properly the first time: 123.123.123.123 = host123.clients.nameofyourisp.com No need to constantly update the DNS records. ...D _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://www.secunia.com/
