retry on truncated packet
only test if the environment variable is set
0.6.0
bump to latest packet parsing
0.6.1
some people don't inspect code, add license files
Make it not fail if it can't find /etc/resolv.conf

On OSX /etc/resolv.conf is generated by the OS anytime the network
changes. If I create a network "By picking 'Create Network...'" from
the wifi menu then there is no /etc/resolv.conf and the throw
that was here would .. uh, .. throw.

Making it not throw makes the dns-server work for my purposes.