Re: [nznog] Update to Telecom Xtra DNS servers

From: "Joe Abley" Unless Xtra's planned configuration is particularly unusual, I would imagine they would return answers from the cache where they exist, return authoritative answers in the case of queries that they have authoritative data for, and otherwise return a referral to the root.

"no answers" is the usual "not here" reply (like ns1.ihug.co.nz) And therein lies the problem. For a non Xtra user, that has Xtra DNS servers hard coded, 90% of DNS requests will probably work because Xtra's servers have much of the nz internet namespace in their cache, (or the servers are authorititive) The IP address 202.27.184.3 is a virus, it seems have spread into the configurations of many NZ computers, I think it is one of those "it just works" scenarios and computer technicians have used it as a default fix for many "wierd" DNS issues. Once Xtra disable recursion for non Xtra customers, those same techncians will be challenged with trying to diagnose a very intermittent "page can not be displayed" fault. Ted, if we assume this change is being made because there are a significant number of requests (relative to the size of your user base) coming from non Xtra IP addresses, then we would have to assume that a significant number of users (that have dumb client resolvers) are going to be affected. Are there any statistics available from your name servers on the scale of this issue (Like is it 10% non Xtra requests?) Cheers BG