Ordering of nameserver addresses in resolver state struct

[Ondřej Bílka]

On Mon, Oct 07, 2013 at 02:56:02PM +0200, Ondřej Bílka wrote:
> On Thu, Sep 19, 2013 at 11:13:39PM +0200, Michal Sekletár wrote:
> > Hi glibc hackers,
> > 
> > I came across following fact which to me seems like an inconsistency, maybe
> > worth to fix.
> >
> Could you file a bug for this one?
>
Did you sumbit a bug report with testcase?  
> > Consider system which has dns resolver configured with 3 dns server
> > addresses. Second address is IPv6 other two are IPv4 addresses, please keep the
> > ordering in mind.
> > 
> > State of dns resolver is such that arrays of nameserver addresses nsaddr_list
> > contains two entries and the third one contains all zeroes. This doesn't
> > correspond to the order of nameservers in /etc/resolv.conf since IPv4
> > nameservers are first and third in the file. However array _u._ext.nsaddrs
> > containing pointers to sockaddr_in6 structures has following content : [nil, ptr
> > , nil]. It reflects ordering in resolv.conf.
> > 
> > Is this intentional? I think that order in later case should be [ptr, nil, nil].
> > 
> > Cheers,
> > 
> > Michal