| > A /48 for a site allows a decent number of subdivisions along the easily human-readable nibble (16 bit) boundaries. Four characters each can be 0 through f. To put it in IPv4 terms: * an IPv6 /64 subnet is equivalent to 'typical' IPv4 /24 (though you can fit much more than ~250 hosts in it) * if assigned a /48, this gives you 16 bits to play with * if you start with a typical IPv4 /24, and would be assigned 16 bits to use, that would bring you up to a /8 So the 'bog standard' IPv6 /48 is the equivalent of an entire IPv4 Class A address. Some folks who have Class As assigned to them: AT&T, Apple, Cogent, Comcast, multiple assignments to US military. * https://en.wikipedia.org/wiki/List_of_assigned_/8_IPv4_addre... And none of those IPv6 addresses have to be NATed to be accessible to the Internet if you wish to provide public services: just change the config of your firewall from default-deny to allowing whatever portions of the network you wish to host service in. |