[rrg] Map and Encaps

[Noel Chiappa]

    > From: Scott Brim <swb at employees.org>

    > A LISP EID names a network attachment point. 

Well.... sort of. (And there are two kinds, IPv4 EIDs and IPv6 EIDs.) What
the IPv4 EID really names is whatever a vanilla 'IPv4 address' names, which
is somewhat ambiguous itself.

It definitely names an entity with a collection of higher-level protocols and
their ports (UDP, ICMP, TCP, etc). It also seems to name an interface
(because to get packets to a different interface on a dual-homed host, you
need to use a different IPv4 address). This is another 'axis of confusion'
with IPv4 addresses (which are also muddied on the location/identity axis).

	Noel