need multicast update callback

[shepper]

New i386 install of 8.2 using ralink 2500 pci card and WPA2.

I get 3 lines at the end of my dmesg after the network associates

ral0:  need multicast update callback
ral0:  need multicast update callback
ral0:  need multicast update callback

I am associated and can ping google. I don't see the handbook addressing this and my google searches tend to indicate that it has something to with mcast(rate) and ucast(rate), how developers have a sense of humor, and that it can be safely ignored.

I guess I'm complusive and would like to understand what this is (seems to be a new feature) and how to work with it. I have tried

ifconfig_wlan0="u/mcastrate 54 WPA DHCP"

without success.

Thanks in advance