[squid-users] Disable IPV6 for certain destinations only?

[Antony Stone]

On Tuesday 18 April 2023 at 14:53:31, Alex Rousskov wrote:

> On 4/18/23 03:38, Ralf Hildebrandt wrote:
> > We're using squid-6, currently v4 only. The use case for us is mostly
> > our users using our proxy to retrieve full text publications of
> > several thousand medical journals... via IPv4.
> > 
> > The publishers "know" our IPv4 range for the proxies and allow us to
> > download freely. What they don't (yet) know is our ipv6 range.
> > 
> > Thus arises the need to "fall back" to ipv4 in the unlikely case some
> > publisher already has ipv6, we connect via ipv6 and suddenly are not
> > allowed to download the publications.
> > 
> > Is there an acl for that kind of need?
> 
> I will rephrase your question to avoid the distraction of "acl":
> 
>    How can I configure Squid to try IPv4 if IPv6 fails?

I don't think that's the same question.

"How can I configure Squid to try IPv4 if IPv6 fails" deal with a network-level 
failure to connect to something.

I think the OP is looking for a way to tell Squid "for this destination 
hostname, don't even try to connect over IPv6, because if you do, we'll get 
rejected (not at the network level, but some application-level) so we need you 
(Squid) to connect using IPv4 only (for this destination)".


Antony.

-- 
If you can smile when all about you things are going wrong, you must have 
someone in mind to take the blame.

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