Page 83 of Update Information for Version 3.51 states the following:
The following additional entry is required in the NETWORKS file:
campus 284.122.107.0
The following entry, as shown in the examples in the NETWORKS
file, is incorrect:
campus 284.122.107
This is incorrect. The first octet of the IP address (284) is an invalid
value. The first octet value can be 184.
NOTE: The NETWORKS file is in the %SystemRoot%\SYSTEM32\DRIVERS\ETC
directory.