On Wed, Nov 06, 2024 at 09:37:55AM +0100, Joe Abley wrote:
> On 6 Nov 2024, at 08:18, Otto Moerbeek <otto=40drijf....@dmarc.ietf.org>
> wrote:
>
> > Two cases against mandatory ordering:
> >
> > - glibc's getaddrinfo orders the list received, so any ordering done
> > *by servers* is going to be undone anyway.
>
> This seems pertinent if glibc is involved in mediating a DNS response on its
> way to an application. It is not obvious to me that this scenario is common.
> This is not the normal situation of a forwarder or a resolver running on
> Linux, for example, or applications running on Linux that use other stub
> resolver implementations.
>
> But in any case, I suppose the recommendation would be that glibc's behaviour
> should be fixed.
I would guess there are many, many cases of applications using glib's
getaddrinfo and some other implementations of getaddrinfo sort as
well. The man page of glibc cites RFC 3484 as the reason for the
ordering. My expectation would be you have a hard time convincing the
glibc people they should ignore that RFC.
-Otto
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