What DNS Pointer Records and Tweetups Have in Common
Tools that monitor network traffic typically work with IP addresses, not server names. Humans, on the other hand, seem to prefer names over cryptic numbers. Most tools deal with that by doing reverse lookups of the IP addresses, i.e. they are looking for DNS PTR records. The result of such a lookup, however, is not always what you expect. Let us look at a simple example:
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