Strict validation of IP address input
Strict validation of IP address input

It is no longer allowed to input something like 'src 1.2.3.4/24'.
The operator has to make a choice to either list a real /24 (1.2.3.0/24)
or input a single IP (1.2.3.4 or 1.2.3.4/32).

This fixes #29

job/aclhound,job/aclhound