Upgrading to r297291 LAGG(4) stops working.

[Ranjan1018 .]

On my laptop I am using LAGG(4) as explained in
"Example 30.3. Failover Mode Between Ethernet and Wireless Interfaces" in
the Handbook.
In rc.conf i have:
# LAGG
ifconfig_re0="up"
ifconfig_ath0="ether 18:67:b0:39:bd:23"
wlans_ath0="wlan0"
ifconfig_wlan0="WPA"
cloned_interfaces="lagg0"
ifconfig_lagg0="laggproto failover laggport re0 laggport wlan0 DHCP"

What's wrong ?
Thanks,
Maurizio