ebpf improvements

 - changed formatting.
 - extract source IPs from UDP packets from ancillary messages.
 - hook inet_dgram_connect to solve intercepting some apps (parsec).
 - remove debugging / unused code.

More info on these changes:
fbdef16
20a03e1
f44d3e8
93d1cef

Closes: #1246.

Author: gustavo-iniguez-goya