Thread:Project:Support desk/GlobalBlocking extension and IPv6/reply (6)

In IPv6, a /64 is usually one LAN (much like an IPv4 /32 is typically one LAN behind a network address translation router).

I doubt any ISP routes as finely as /128 or anything even vaguely close... even the Hurricane Electric tunnelbroker.net is a /64 or pair of /64's. The only /128's I've seen handed out are for tunnels to individual desktop PC's (gogo6 has an 'anonymous /128' as their lowest class of service, but even there everything else is at least a /64).

There was a lengthy discussion of IPv6 rangeblocks at 24294. Odds are, they will be not the exception but the rule given that the lower eight-bytes of a sixteen-byte IP address de-facto belong not to the ISP but the end-user (at least one RFC just stuffs each computers MAC address - or any random, unique number - in there at the desktop level)