In Squid 3.1 you need the to_ipv6 directive after each tcp_outgoing_address line. If you upgrade to 3.2 you won't encounter this problem.

Reference: http://www.squid-cache.org/Doc/config/tcp_outgoing_address/

Squid proxy: how to link inbound IPv4+port to outbound IPv6
Which of the following is more appropriate / polite?

I would like to bring a couple of facts (or things?) to your notice.
OR
I would like to let you know a couple of facts.

Please advise.
