[squid-users] Is there an option to completely disable IPV4 outgoing address for Squid

[Ahmad Alzaeem]

We just need IPV4-IPV6 conversation system to for an ISP that has ran out of ipv4 .
So we need to minimize IPV4 usage with them .


Thanks 


> On Feb 19, 2020, at 5:33 PM, Alex Rousskov <rousskov at measurement-factory.com> wrote:
> 
> On 2/19/20 8:47 AM, Ahmad Alzaeem wrote:
> 
>> Is there an option for squid to use IPV6 for outgoing and always skip
>> IPV4 of websites resolving address ?
> 
> AFAIK, there is no such option. You might be able to fake it by denying
> requests on IPv4-destined connections (via Squid ACLs and/or at the OS
> level), in hope that requests on those denied connections will be
> reforwarded, but I would not recommend this clumsy approach.
> 
> However, it is easy to add a DNS forwarder that would immediately
> respond to all Squid A queries with an empty set of IPv4 addresses. If
> you cannot configure BIND/etc. to do that, then it would only take a few
> lines of code to write such a forwarder in Perl/etc. using existing DNS
> resolver libraries -- you do not need a generic forwarder; only
> something that can handle Squid queries...
> 
> What are you going to do with sites that have no IPv6 addresses?
> 
> Alex.
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