[squid-users] no fallback to ipv4 if ipv6 remote address is non-functional

[Brian J. Murrell]

At least from here, irc.bcwireless.net:6667 is non-functional
(connection times out) on IPv6 but works on IPv4:

# telnet irc.bcwireless.net 6667
Trying fcaa:8ef7:51b9:8f04:58f1:7364:e16e:fe2f...
telnet: connect to address fcaa:8ef7:51b9:8f04:58f1:7364:e16e:fe2f: Connection timed out
Trying 198.27.79.54...
Connected to irc.bcwireless.net (198.27.79.54).
Escape character is '^]'.
:wtf.bcwireless.net NOTICE AUTH :*** Looking up your hostname...
:wtf.bcwireless.net NOTICE AUTH :*** Checking ident...
:wtf.bcwireless.net NOTICE AUTH :*** Found your hostname
:wtf.bcwireless.net NOTICE AUTH :*** Received identd response

And while telnet is properly falling back to the IPv4 address, Squid
3.4.3 does not seem to be, despite:

http://readlist.com/lists/squid-cache.org/squid-users/11/58389.html

Trying to connect through squid returns a 503 and I can see on the
outgoing interface that no IPv4 connection attempt is made.

Is there possibly anything in my squid.conf that is preventing this IPv4
fallback from working?  I couldn't find anything that had to do with
that.

Cheers,
b.

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