Bind a new rpc program to an existing client
sunrpc.clnt.bind_new_program
vers
the version of new RPC program
old_vers
the version of old RPC program
progname
the name of new RPC program
servername
the server machine name
prog
the number of new RPC program
old_progname
the name of old RPC program
old_prog
the number of old RPC program