[squid-users] squid5 Happy Eyeballs - Is it possible to enable IPV4 only or IPV6 only ?

[Francesco Chemolli]

Could tcp_outgoing_address do the deed, forcing a certain source ip or
ipv4-only interface for some or all requests?

On Mon, 2 May 2022 at 16:39, Alex Rousskov <rousskov at measurement-factory.com>
wrote:

> On 5/1/22 23:49, Ahmad Alzaeem wrote:
>
> > sometime the IPV4
> > instance receive DNS resolution of the destination as IPV6 and the
> > connection fails !!
> >
> > sometimes the IPV4 instance receive the DNS resolution of the
> > destination as IPV6 and the connection fail .
> >
> > Is there any option we can do based on the environment above ?
>
>
> Without Squid code modifications, your options are:
>
> * Use a custom DNS resolver (configuration) that never sends IPv4
> address records to an IPv6-only Squid. Use a custom DNS resolver
> (configuration) that never sends IPv6 address records to an IPv4-only
> Squid. Configure each Squid to use the right resolver (see
> dns_nameservers).
>
> * Disable IPv6 support in IPv4-only Squid at ./configure time. This does
> not help with the IPv6-only Squid and has other negative side effects. I
> do not recommend this option.
>
>
>  > Like maybe we disable eyeballs or preserving it while add an option
>  > like DNS A records or DNS AAAA records .
>
> It would be possible to enhance Squid by adding a configuration option
> that disables (certain) A or AAAA queries, but proper modifications are
> not trivial and nobody has done them yet:
>
> https://wiki.squid-cache.org/SquidFaq/AboutSquid#How_to_add_a_new_Squid_feature.2C_enhance.2C_of_fix_something.3F
>
>
> Cheers,
>
> Alex.
>
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-- 
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