> DNS uses UDP. TCP is normally only used for zone transfers. There is > significant philosophical discussion about this issue every time it is > raised.. apparently some version(s) of AIX always use TCP for DNS requests. > But it works for about 99.999% of all requests.
Not this again! It's not a philosophical discussion, it's just that some
people haven't read the RFCs. The spec requires nameservers to answer
queries on BOTH 53/tcp and 53/udp. If yours doesn't it's broken. If your
firewall blocks tcp queries it's broken. End of story.
--
Dr George D M Ross, Division of Informatics, University of Edinburgh
Kings Buildings, Mayfield Road, Edinburgh, Scotland, EH9 3JZ
Mail: [EMAIL PROTECTED] Voice: +44 131 650 5147 Fax: +44 131 667 7209
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