Today I finished off CompSoc's new dynamic DNS service.
Members can get yourname.dyn.uwcs.co.uk pointed at an IP address of their choice by placing the address in a file in their home directory. The records are updated every minute and each 'A' record has a TTL of 60 seconds.
I've added a few methods of updating the address: hope they're useful. Thanks to Tim for Perl and DNS-fu.