Network Working Group A. McKenzie
Request for Comments: 208
Bolt Beranek and Newman
9 August 1971
Categories: B.l, C.2
Attached is a copy of a revision to Appendix A of BBN Report No.
1822; the revised version of the Appendix is our first attempt to
make the list of sites attached to the ARPA Network prospective
rather than retrospective. We are adopting this approach because of
the large number of sites scheduled for attachment in the near
future, and because many Hosts apparently require a site's address to
be in some local table before their NCPs will permit communication
with the site. Therefore, we urge such Hosts to add the new sites to
their lists of addresses as soon as possible. Also, please note the
address change which will be made at BBN on exactly September first.
Incidentally, it seems to us that it is irrational for an NCP to
discard otherwise valid messages, simply because the sender's address
doesn't appear in a local table. Similarly, it seems almost as
irrational for an NCP to prevent a local user from trying to
communicate with a remote site, the address of which is known to the
user but not stored in the NCP's tables.