Blacklist ipdiscover on some networks

Add the ability to blacklist ipdiscover on some networks we know we don't want do discover. And/or add the ability to scan only whitelisted networks. For example : not discovering zeroconf (169.254.0.0), networks created by virtualization tools like virtualbox (192.168.*.0), networks where mobility computers are travelling ... just enable discovering network on the corporate network which is known.