On 2 Jul 2004, at 10:43, Leo Bicknell wrote:
Note in the later pages what happens to particular servers under packet loss. They all start to show an affinity for a subset of the servers. It's been said that by putting some non-anycasted servers in with the anycasted servers what can happen is if the anycast has issues many things will "latch on" to the non-anycasted servers and not go back even when the anycast is fixed.
In my opinion, the primary purpose of anycast distribution of nameservers is reliability of the service as a whole, and not performance. Being able to reach a server is much more important than whether you can get a reply from a particular server in 10ms or 500ms. So, I think the issue you mention (which is certainly mention-worthy) is a much smaller problem than the apparently observed problem of all nameservers in the NS set being unavailable. Joe