[PATCH] resolver does not try other nameservers on SERVFAIL

[Michel Stam]

Dear mailing list,

I have seen very little response on this topic; Would it be possible to 
apply this patch to trunk?

I would like to add that without this patch, the behaviour in uClibc 
differs from glibc.

Best regads,

Michel Stam
On 03/03/2014 11:46 AM, Michel Stam wrote:
> Commit e1420eca7374cd8f583e9d774c890645a205aaee fixed a bug where a
> response code should mean the next server is tried. However, it tries
> only the next search domain, and never skips to the next server.
>
> In my specific situation, I was using tmdns as a DNS -> mDNS bridge to 
> resolve mDNS names. tmdns returns SERVFAIL on any domain that does not 
> end in .local.
>
> uClibc then tries all the search domains in /etc/resolv.conf and gives 
> up, not jumping to the next nameserver in the list (in my case the 
> real nameserver). Thus, any non-.local domain never got resolved.
>
> My resolv.conf;
> domain bla.net
> search bla.net
> nameserver 127.0.0.1
> nameserver 172.16.1.1
>
> The patch I have attached basically allows SERVFAIL to go back to the 
> case as it was before 0.9.32, except that search domains are still tried.
>
> Best regards,
>
> Michel Stam
>
>
>
>
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