Hello Alex , Thanks for the nice info . I will consider what you said .
Thanks From: Alex Rousskov <rouss...@measurement-factory.com> Date: Monday, May 2, 2022 at 8:38 AM To: Ahmad Alzaeem <0xf...@gmail.com>, Squid Users <squid-users@lists.squid-cache.org> Subject: Re: [squid-users] squid5 Happy Eyeballs - Is it possible to enable IPV4 only or IPV6 only ? 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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