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

[Amos Jeffries]

On 12/06/2015 9:56 a.m., Brian J. Murrell wrote:
> 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
> 

see <http://readlist.com/lists/squid-cache.org/squid-users/11/58405.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.
> 

details, details.
- You speak of a squid.conf but dont show any of its contents.
- You speak of 503 but show now trace or evidence from cache.log (or
even access.log) that might hint as a reason for it.

Amos