Is it feasible to be used by ISP for their local communication (for their IPTV devices, VoIP gateways, etc.) or should strictly be used for CGN? CGN is one of the worst solutions :( Being a customer stuck with private IP unable to open ports for your services, getting public IP changed maybe several times per day... eek! Thanks God I've got my static /29 over fiber :) Good video, simple and to the point :)