> On 7 сент. 2015 г., at 9:36, Lukas Tribus <luky...@hotmail.com> wrote:
> 
> 
> 
> Best would be to strace this, but this is Freebsd amd64,
> so that doesn't work. Can you trace the syscalls with
> the strace equivalent at least?


It fails that way:

socket(PF_INET,SOCK_DGRAM,17)                    = 4 (0x4)
connect(4,{ AF_INET 8.8.8.8:53 },128)            ERR#22 'Invalid argument'

3rd argument for connect() looks wrong for ipv4:

ERRORS
     The connect() system call fails if:

     [EINVAL]           The namelen argument is not a valid length for the
                        address family.


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