I installed squid 3.1.10 on CentOS 6.3 with the default squid.conf. When I test it out from localhost: >>> [root@33736 ~]# telnet localhost 3128 Trying ::1... Connected to localhost. Escape character is '^]'. GET http://www.google.com/ HTTP/1.0 >>> (followed by two carriage returns), it waits about three minutes and then outputs an error page saying: The following error was encountered while trying to retrieve the URL: http://www.google.com/ Connection to 2607:f8b0:4004:800::1014 failed. The system returned: (110) Connection timed out This didn't happen with Squid 2.6 which I was using previously, but it happens with squid 3.1.10, and it only happens with certainly websites -- namely, these sites all time out with errors similar to the above, when requested through squid: http://www.google.com http://www.yahoo.com http://www.facebook.com but these do not: http://www.peacefire.org http://www.cnn.com http://www.slate.com This leads me to think that because of something to do with IPv6 in the new version of Squid, it's failing only for certain sites (presumably sites that are IPv6 enabled?). What is the irreducible minimum change I need to make to my squid configuration so that it will not time out when requesting these sites? I have already read http://wiki.squid-cache.org/SquidFaq and http://wiki.squid-cache.org/Features/IPv6/ but they don't explicitly answer the question of how to make squid stop giving these errors for IPv6-enabled sites and work exactly the way it did before. Also is there a way to tell (i.e. a command to type) to see if a website is IPv6 enabled and hence whether or not it would fail in my correct configuration? (So that if building future test cases, I can have some cases for sites that are IPv6 enabled and some that are not.)
