[reSIProcate] Bug in DnsUtil::getInterfaces

[Johannes Dohmen <johannes.dohmen@xxxxxx>]

Hello dear developers,

i found a Bug in DnsUtil.cxx in the method getInterfaces(), which occurs on 
64Bit architectures. Where no interface other than the local loopback is found, 
and therefore none is returned.
I spoke with someone in the glibc channel to make sure it's not a bug in the 
ioctl-call but it is not. 
After some research I (hope I) found the reason for the bug and created a fix 
which works with both 32 and 64bit (see attachement, I hope it works I never 
created a patch before). 

Greetings from germany

Johannes

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