[unisog] Collecting PTR names rather than IP addresses (Was: Re: IRC Bot list (cross posting))

Valdis.Kletnieks at vt.edu Valdis.Kletnieks at vt.edu
Wed Feb 9 20:19:34 GMT 2005

On Wed, 09 Feb 2005 11:43:27 PST, Dave Dittrich said:

(trimming nanog from the cc: list)

> Because of the fact that DNS<=>IP mappings can change over time, it
> is best to always get both sides of the equation and note the time
> at which you obtained this information (and timezone, and known time
> reference source or skew from a trusted time source.) 

Even more aggravating is when the DNS<=>IP mapping is essentially static,
but the actual machine referenced by the IP changes due to DHCP or modem
pool rotary issues...
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