5 ms·

AFAIK, it's customary to assign a /64 to each machine, and the last 64 bits are used for other purposes (usually the MAC address I think?). https://en.wikipedi

• simoncion 12y ago
  Perhaps we're using different terminology, but it's absolutely not customary to assign a /64 to each machine. IME one advertises one or more /64's on a given network, then (either through DHCPv6, or SLAAC [or both]) machines attached to that network acquire addresses within those spaces. These machines will have a XXXX::XXXX/64 address, but that just means that they're attached to a network that advertises a /64, not that that machine has been assigned an entire /64 for its use.
• ghshephard 12y ago
  With IPv6 you assign a /64 to the network. All networks in IPv6 are 64 bits long, with 64 bits assigned to the host's interface ID. There are lots of ways for a host to generate an Interface ID - (http://technet.microsoft.com/en-us/library/cc736439(v=ws.10).aspx http://technet.microsoft.com/en-us/library/cc736439(v=ws.10)...) is a nice reference.