MAX_VERS
client = clnt_addr_create(address, nconf, prognum, MAX_VERS);
maxvers = MAX_VERS;
(void) pstatus(client, prognum, MAX_VERS);
versnum = MAX_VERS;
maxvers = MAX_VERS;
(void) pstatus(client, prognum, MAX_VERS);
client = clnt_com_create(&addr, prognum, MAX_VERS, &fd, trans);
maxvers = MAX_VERS;
(void) pstatus(client, prognum, MAX_VERS);