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 From:  Lee Sharp <leesharp at hal dash pc dot org>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] DNS (Off Topic) Question
 Date:  Sat, 20 Oct 2007 12:07:22 -0500
David Haché wrote:
> I would not suggest that neither.  Usually Dns update around the world in
> about 15 min.
> And most dns providers don't care for the TTL value you put so it's not bad
> to change the ttl but it will most likely not do anything.

Some do recognize TTL and some don't.  Set the ttl for 5 minutes about 6 
hours before the change.  Once it is stable, set it back to 4 hours. 
And recognize that some providers will ignore what you do.  (However, 
all of the ones I have seen respect TTL)