possible bug in netif or handbook when using lagg with wlan devices

[Eitan Adler]

I copied my rc.conf from
http://www.freebsd.org/doc/handbook/network-aggregation.html
the last paragraph

$cat /etc/rc.conf
hostname="ByteByte"

ifconfig_bge0="UP"

ifconfig_bwn0="ether xyzabc UP DHCP"
wlans_bwn0="wlan0"
ifconfig_wlan0="UP DHCP"

cloned_interfaces="lagg0"
ifconfig_lagg0="laggproto failover laggport bge0 laggport wlan0 DHCP"

When I do /etc/rc.d/netif restart I get:

ifconfig: interface wlan0 does not exist
Stopping Network: lo0 bwn0 bge0 lagg0 wlan0
lo0: ...
bwn0: ...
bge0: ...
lagg0: ...
ifconfig: interface wlan0 does not exist
ifconfig: create: bad value
ifconfig: UP bad value
ifconfig: UP bad value
ifconfig: SIOCSLAGPORT: Device bust
Starting Network: lo0 bwn0 bge0 lagg0
lo0: ...
bwn0: ...
bge0: ...
lagg0: ...
-- 
Eitan Adler