iwi0 "need multicast update callback"

Hi list,

After updating my pc today, I'm getting following message on the console.
As it seems to be working ok, but is there any way to get rid of it?

   iwi0: need multicast update callback

My setup are as follows:

rc.conf:
wlans_iwi0="wlan0"
ifconfig_wlan0="DHCP ssid xxxxxxx wepmode on wepkey 1:yyyyyy weptxkey 1 deftxkey 1 country JP"

ifconfig:
iwi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
        ether 00:0e:35:c2:a2:7b
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
        status: associated
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:0e:35:c2:a2:7b
        inet 192.168.11.2 netmask 0xffffff00 broadcast 192.168.11.255
        media: IEEE 802.11 Wireless Ethernet OFDM/36Mbps mode 11g
        status: associated
        ssid xxxxxxxxxxxx channel 11 (2462 Mhz 11g) bssid zz:zz:zz:zz:zz:zz
        regdomain JAPAN country JP authmode OPEN privacy ON deftxkey 1
        wepkey 1:104-bit txpower 23 bmiss 24 scanvalid 60 protmode CTS wme

Thanks in advance,
  Haro
=-----------------------------------------------------------------------
           _ _    Munehiro (haro) Matsuda
 -|- /_\  |_|_|   KGT Inc.
 /|\ |_|  |_|_|   2-8-8 Shinjuku, Shinjuku-ku Tokyo 160-0022, Japan
                  Tel: +81-3-3225-0767  Fax: +81-3-3225-0740