MPE(4) functionality

[Insan Praja SW]

Hi misc@,
Working on current here, trying to create mpe but all I can get is;
$ sudo ifconfig mpe0 create
ifconfig: SIOCIFCREATE: Invalid argument

I guess its not enabled yet. I'm asking just to make sure my box is ok and  
nothing else.
Thanks,

--
insandotpraja(at)gmaildotcom