On Apr 4, 2007, at 11:57 AM, <michael.dillon@bt.com> <michael.dillon@bt.com> wrote: [SNIP]
That is really a separate issue. This discussion is about limiting the damage caused by domains which do rapid NS switching. If we know which domains are new, DNS operators could put them on probation and only allow a minimum TTL of 1 day on those names.
All that this means is that domains will be registered and sit idle (or host a web server for domain parking, useless content to make it look legitimate, etc.) until the probation period is up. Then it be converted into a rapid NS switching domain used for whatever...
The domain owner can still switch NSes but the queries won't chase him, therefore he will sell less product and quickly stop doing NS switching. If he's not NS switching then it is easier to track him down, blackhole him, filter him, whatever.
--Michael Dillon