http://www.rfc-editor.org/rfc/rfc0831.txt
RFC 0831: Backup access to the European side of SATNET, R.T. Braden1982-12-01T23:00:00-00:00The purpose of this RFC is to focus discussion on a particular Internet problem: a backup path for software maintenance of the European sector of the Internet, for use when SATNET is partitioned. We propose a mechanism, based upon the Source Routing option of IP, to reach European Internet sites via the VAN Gateway and UCL. This proposal is not intended as a standard at this time.