DNS migration and folks that don't play nice

[Ben Scott]

On 4/10/06, Mark Komarinski <mkomarinski at wayga.org> wrote:
> When we change a host's IP address, we drop the TTL to 300 seconds a
> few days before, make the change, then raise it back up to 1 day.

  Ideally, one does a "ramp down" on the TTL.  For example, if your
TTL is set to one week normally, then one week in advance, you reduce
the TTL to six days.  Six days out. you, you reduce it to five.  And
so on.  Use a little padding.  I believe DJB's DNS tools have a
feature that does this automagically.

-- Ben