RB411/411R address list entry added

Hello,
I have an RB411/411R running ROS 3.22. The log is continually filled with ‘system info: address list entry added system info: address list entry removed’ every 60sec.
I am not particularly expert, so could someone please tell me what is causing this and where I am best to look to resolve it - particularly the log entries?

Thanks

Problem has been resolved