Taking care of some memory leaks
Merge remote-tracking branch 'upstream/master'
Added a smarter way of determining libnet version if IPv6 is enabled. This will ensure libnet >=1.1.5 is installed if IPv6 is enabled
added REQUIRED flag to find_package for Libnet
Revert "Taking care of some memory leaks"

This reverts commit d8adf041811c327a19ee88697799b8a607d9e5bd.
Merge pull request #104 from eaescob/master

CMake fixes for IPv6 and other fixes