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Subject: lib/rpc should have way to register with secure rpcbind using 
 unix domain socket
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Under fedora 10 and other OS's - portmap has been replaced by rpcbind.

Security considerations have "improved" - requiring a loopback socket
and a reserved port (<1024) unless certain flags are given.

Looking at the sources for rpcbind - there is now support for a unix
domain socket connection - which is known to be local - and does not
therefore require a reserved port.

Either the rpc layer should be replaced with a newer implementation or 
the library could be shoehorned to attempt to use a unix domain socket
if present.