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All machines using Secure RPC must have a Secure RPC domain name. One machine per domain acts as master server for the domain. The domainname(1Mnis) command sets a machine's domain name. The machine's SRPC_DOMAIN tunable parameter should also be set to the Secure RPC domain name. Otherwise, the name is forgotten across reboots. For information on setting the SRPC_DOMAIN variable, see ``Setting the Secure RPC domain name''.
Secure RPC identifies users using a triple (operating system, uid, domain). Thus, users may have multiple registrations with RPC, provided all such triples are unique. For example, a user may belong to more than one domain, with operating system and uid identical for each.