`SNAP` "addresses"

[mentalisttraceur]

Not exactly actual hardware addresses, but SNAP protocol uses OUI as the first part, so if I ever had to write code that needs to wor with SNAP, I could totally see myself doing something like this:

class SNAPAddress(macaddress.HWAddress):
    size = 40
    formats = ...

And then maybe doing stuff like OUI(my_snap_address) (assuming #8), etc.

Anyway, nothing to do for now, just jotting it down as another example of almost-hardware-address things which this library could be useful for.

[mentalisttraceur]

Rediscovered SNAP when looking into the right naming to use in #26 - the name of the non-OUI part in SNAP is "protocol identifier". (Not "NIC" nor even "device identifier". Maybe the generic "extension identifier" is valid here; in any case, this suggests that perhaps the right name is just "Identifier" or "Extension" or something like that.)