On 8/08/2007, at 4:14 PM, jamie baddeley wrote:
Operators,
I've been asked by our friends at TVNZ to assist with a minor issue. For various reasons some folks at TVC would appreciate it if you could flush the information you have in your recursive/caching nameservers for the zone images.tvnz.co.nz
That would help clear up some TTL badness.
For those that don't know, a better way to renumber is to run your public facing services on both the new /and/ old addresses simultaneously, for /at least/ the TTL that your DNS zone proposes. If you can't do that, at least make your DNS TTLs shorter than 86400 - some providers (apparently) don't honour that, though. I'm a bit surprised that TVNZ didn't know this, actually. Was this an emergency move? -- Nathan Ward