Everything in this manual to date refers to IP4 (Ip version 4) addressing. The world is running out of IP4 addresses and has been for some time. Various strategies have been adotpted by ISPs to obscure this issue adn much of the world is still running on IPv4. | Everything in this manual to date refers to IP4 (Ip version 4) addressing. The world is running out of IP4 addresses and has been for some time. Various strategies have been adotpted by ISPs to obscure this issue adn much of the world is still running on IPv4. |