diff -up dhcp-4.1.0/client/dhclient.c.usage dhcp-4.1.0/client/dhclient.c
--- dhcp-4.1.0/client/dhclient.c.usage 2009-01-06 10:36:55.000000000 -1000
+++ dhcp-4.1.0/client/dhclient.c 2009-01-06 10:39:58.000000000 -1000
@@ -990,6 +990,10 @@ static void usage()
"[-s server]");
log_error(" [-cf config-file] [-lf lease-file]%s",
"[-pf pid-file] [-e VAR=val]");
+ log_error(" [-I <dhcp-client-identifier>] [-B]");
+ log_error(" [-H <host-name> | -F <fqdn.fqdn>] [-timeout <timeout>]");
+ log_error(" [-V <vendor-class-identifier>]");
+ log_error(" [-R <request option list>]");
log_fatal(" [-sf script-file] [interface]");
}