Date: Wed, 21 Mar 2001 21:19:25 +0100 Subject: Re: adnsresfilter vs BulkDNS > ... > Is BulkDNS better than adnsresfilter from GNU adns ? > (http://www.chiark.greenend.org.uk/~ian/adns/) First I wasn't really aware of adns. Then I found that it was already installed on my machine :) In theory both should be about the same, they work the same way and the limiting factor is not the performance of the system but the response time of the DNS servers. In practice I've found adnslogres much much slower for managing logfiles because it looks up every IP, whereas I omit duplicates (and in logfiles you get a lot of duplicates, in my real world examples less then 10% are uniq). And of course my tool is more portable - whereever you have perl running you can run it (Net::DNS is also completly written in perl, so it does not introduce additional problems) And a minor moint: adns is GPL, while with my tool you can do what you want (I'm not against GPL, but 300 lines of code are not worth to protect by any license, it's not enough intellectual property in it :)