untested utility functions
clean up
cleanup .gitignore
ipv6 still to be done
example script (untested)
fixed mistakes; ipv6 functions just dummies yet
Merge branch 'utility_functions' into l3-multi-destinations
updated example
Merge pull request #18 from scholzd/l3-multi-destinations

new functions on packets + L3 multi destinations
add ipv6 class