Odd Ethernet Traffic From Tag Manager to "192.168.1.81"

[zac.p...@gmail.com]

I'm seeing a repeating burst of traffic in my firewall logs that looks like the Tag Manager is trying to reach a fixed private address that is not part of my network.

There are always six attempts to contact 192.168.1.81 on port 35817 via TCP. The source address is my tag manager, but I don't assign any IPs on the 192.168.1.0/24 subnet, so there is nothing there to receive this traffic (even if the firewall wasn't rejecting it). The source port of the traffic varies between requests but is generally in the 44xx range. This group of requests happens about once every ten minutes.

Any ideas on what may be happening? Maybe a hard-coded debug IP or something?

-Zac