On Fri, Feb 20, 2015 at 6:21 PM, Harlan Stenn <st...@ntp.org> wrote: > This is interesting. It may be that only 4 responses are returned at a > time, but there has been lots of evidence and experience that depending > on your resolver (most resolvers, from what I've seen), you won't get > the same responses each time (this point assumes there are more than 4 > answers to be had). >
I suspect the limit of four is enforced by the pool DNS servers and tweaked by a short TTL. Two points: 1) sometimes 2.*.pool is magic. One would want to account for that. 2) sometimes a cache will return the same answer for n.*.pool if n is a constant for longer than you might expect despite the TTL. Something like 0.uk.pool, 1.uk.pool, 3.uk.pool and uk.pool will should return 16 unique IPv4 addresses in the UK. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
