Router log

I'm using a TP-LINK modem router, model TD-W8960N.

I noticed a lot of activity on the panel lights tonight, whilst the computer
was on but not being used. When I check the router's log, there's one line
repeated every few minutes:

"igmp[691]: setsockopt IP_MSFILTER"

Can anyone explain what this means, please?

Thank you.

Check this out: http://unix.stackexchange.com/questi...pt-ip-msfilter