Regarding the discussion at http://www.mail-archive.com/squid-users@xxxxxxxxxxxxxxx/msg79611.html The ipv6 issues you are seeing are related to the hardware load balancers in place that govern the response to www.carfax.com. They are not aware of, and do not respond correctly (per RFC) to ipv6 lookups. Part of the problem is on our side, the non-RFC failure to respond. Part of the issue is on the client side, where the client has successfully already received a valid ipv4 response, yet waits for 2-3 timeouts of the ipv6 lookup before proceeding. I have confirmed this using multiple packet captures. The most ideal solution, from our perspective, is to turn off ipv6 lookups on the client side. Realizing that this is not likely, we are actively working to solve this issue, but since we do not currently offer any ipv6 records, it has not previously been a priority. Rick, a Carfax network guy -- “Do not wait; the time will never be “just right.” Start where you stand, and work with whatever tools you may have at your command, and better tools will be found as you go along.” —Napoleon Hill
