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Re: Geographic map of IPv6 availability

  • From: Stephen Wilcox
  • Date: Sat Oct 06 08:13:53 2007



On 6 Oct 2007, at 05:53, Kevin Day wrote:



On Oct 5, 2007, at 10:38 PM, Kevin Loch wrote:


Nathan Ward wrote:
On 6/10/2007, at 3:18 AM, Stephen Wilcox wrote:
<stuff>
Given the above, I think there is no myth.. !
That's because the 'v6 network' is broken enough that putting AAAA records on sites that need to be well reachable is a bad idea.
For example, due mainly to Vista's 6to4 tunnelling stuff (based on researching a random sample of users), I'd lose about 4% of visitors to my web-sites if I were to turn on AAAA records.

Has anyone who was using AAAA records for a site turned them off due to
reachability problems?



Yes. We tried it on one of our client's rather high profile sites and had to turn it off because of exactly that problem.

Ditto, we started enabling v6 a few years ago and tried dual stacking some servers including DNS and www .. we noticed that hosts were doing DNS lookups over v4 that would yield AAAA results to v6 addresses they could not reach and they preferred AAAA over A so the end user experienced a mysterious hang then a timeout error


Steve