Date: Thu, 6 Dec 2018 16:01:52 -0500 From: Rich Felker <dalias@...c.org> To: Florian Weimer <fweimer@...hat.com> Cc: "A. Wilcox" <awilfox@...lielinux.org>, musl@...ts.openwall.com Subject: Re: DNS resolver patch On Thu, Dec 06, 2018 at 09:36:01PM +0100, Florian Weimer wrote: > * A. Wilcox: > > > On 12/06/18 12:18, Florian Weimer wrote: > >> The alternative, using a NOERROR/NODATA response, confuses musl search > >> processing. > > > > ??? > > > > The musl resolver should be able to handle a resolver returning NODATA. > > That is popular for having a separate extranet infrastructure - your > > extranet DNS only contains records for your local domain and returns > > NODATA for requests outside that domain. > > > > If you are correct that such a response "confuses musl search > > processing", that's a bug in musl that needs to be fixed. > > <https://www.openwall.com/lists/musl/2018/03/31/2> > > I don't know if it was merged. That patch didn't (and fundamentally can't) produce fully-consistent results (consistent with non-A/AAAA queries). Something similar (with configurable opt-in) might be sufficient if there were a need, but supposedly the underlying issue with Cloudflare was fixed. So in summary, it hasn't been merged. Rich
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