11.0-ALPHA5 ipfw cannot create table type number

While testing the new firewall functionality on head I stumbled in this:

root_at_sensei:~ [0]# ipfw table foo create type number

ipfw: Table creation failed: Operation not supported
root_at_sensei:~ [71]#

The ipfw man page states this should work, am I missing something?

-- 
Guido Falsi <mad_at_madpilot.net>