external_acl_type and ipv6

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external_acl_type and ipv6

Vieri Di Paola
Hi,

What is the advantage of using ipv6 instead of ipv4 by default for
external_acl_type?

http://www.squid-cache.org/Doc/config/external_acl_type/

Thanks,

Vieri
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Re: external_acl_type and ipv6

Amos Jeffries
Administrator
On 22/10/19 7:31 pm, Vieri Di Paola wrote:
> Hi,
>
> What is the advantage of using ipv6 instead of ipv4 by default for
> external_acl_type?
>

* larger packet sizes,

* simplicity, and

* all modern OS support IPv6 by default.

There is also:

<https://tools.ietf.org/html/bcp177>

"
   o  IPv6 support must be equivalent or better in quality and
      functionality when compared to IPv4 support in a new or updated IP
      implementation.

   o  New and updated IP networking implementations should support IPv4
      and IPv6 coexistence (dual-stack), but must not require IPv4 for
      proper and complete function.

   o  Implementers are encouraged to update existing hardware and
      software to enable IPv6 wherever technically feasible.
"

No reason not to comply on private channels created between Squid and
its helpers.

Amos
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