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Date: Thu, 01 May 2014 03:31:57 +0200
From: Stefan de Konink <>
To: <>
Subject: Re: Requirement for proper DNS resolving / source port = 0

On Thursday, May 1, 2014 3:19:57 AM CEST, Rich Felker wrote:
> One further idea -- could you send the output of strace (using the -o
> option to write a log file, and -f if the program you're using is
> multithreaded or forking) showing a failed lookup? This might help
> understand what's happening. it with some sleepdeprivation.

The problem was that I disabled CONFIG_PROC_SYSCTL, this resulted in the 
fact that /proc/sys was not mounted and probably 
net.ipv4.ip_local_port_range could not be used.

I don't know if any of the musl and/or busybox code explicitly depends on 
this. But it is one out of two problems [1] that I am breaking my head over 

Thanks for your quick reply, it is very appreciated.



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