September 1981
RFC 796 Address Mappings
particular address format and length, the following section describes
the mapping between internet local addresses and the actual address
format used in the particular network.
Internet to Local Net Address Mappings
--------------------------------------
The following transformations are used to convert internet addresses
to local net addresses and vice versa:
AUTODIN II
----------
The AUTODIN II has 16 bit subscriber addresses which identify
either a host or a terminal. These addresses may be assigned
independent of location. The 16 bit AUTODIN II address is
located in the 24 bit internet local address as shown below.
The network number of the AUTODIN II is 26 (Class A).
+----------------+
| HOST/TERMINAL | AUTODIN II
+----------------+
16
+--------+--------+--------+--------+
| 26 | ZERO | HOST/TERMINAL | IP
+--------+--------+--------+--------+
8 8 16
Postel