Issue with stale resolv.conf state
Philip Sanetra
code@psanetra.de
Tue Mar 12 09:09:39 GMT 2024
Hi,
I think removing the automatic downgrade without also making the single-request option the defeault behavior would break a lot of systems.
I know of at least two environments in different companies where the default behavior results in 5 seconds timeouts and only the automatic downgrade improves performance in subsequent DNS lookups.
I would appreciate using single-request option as default, like mentioned in https://sourceware.org/bugzilla/show_bug.cgi?id=29017
Regards,
Philip Sanetra
On Tuesday, 12 March 2024 at 7:45 AM, Florian Weimer <fweimer@redhat.com> wrote:
>
>
> * Cristian Rodríguez:
>
> > On Mon, Mar 11, 2024 at 7:51 AM Florian Weimer fweimer@redhat.com wrote:
> >
> > > * John Levon:
> >
> > cessing).
> >
> > > Maybe we should just remove the automatic downgrade, basically not
> > > persist this across queries anymore.
> >
> > Yeah. +1. Users of those broken nameservers deserve at least noticing
> > they are wrong if such systems are really still around ..
>
>
> I filed:
>
> Automatic activation of single-request options break resolv.conf reloading
> https://sourceware.org/bugzilla/show_bug.cgi?id=31476
>
>
> On the other hand, we have this request:
>
> | Change resolv.conf default to single-request
> | […]
> | We have the year 2022 and these issues still occur, so it was not some
> | kind of issue that went away by time as it was possibly expected when
> | glibc 2.10 was released.
>
> https://sourceware.org/bugzilla/show_bug.cgi?id=29017
>
>
> So the solution might not be so straightforward.
>
> Thanks,
> Florian
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