Pings with Google 8.8.8.8 to port 3111

Hi

I have a BR1 Mk2 and I believe that I’ve removed any DNS or health checks that use 8.8.8.8

However, I’m seeing traffic amount every minute with 8.8.8.8 coming in to the WAN port on port 3111.

Are there some hidden references to 8.8.8.8 that I need to remove?

Please let me know if you have any ideas?

Thanks
David