The problem was on our side, our application people were using IP-based persistence on their load balancer; they changed to cookie-based persistence, and all is well. Thanks On Thu, Nov 3, 2022 at 5:06 PM David Farmer <farmer@umn.edu> wrote:

We are seeing T-Mobile customers changing source IPv4 addresses constantly in the Twin Cities Metro Area at least and at a very high rate, seems like their Carrier Grade NAT is overloaded or at least not behaving well.

Is anyone else seeing this?

Thanks

-- =============================================== David Farmer Email:farmer@umn.edu Networking & Telecommunication Services Office of Information Technology University of Minnesota 2218 University Ave SE Phone: 612-626-0815 Minneapolis, MN 55414-3029 Cell: 612-812-9952 ===============================================

-- =============================================== David Farmer Email:farmer@umn.edu Networking & Telecommunication Services Office of Information Technology University of Minnesota 2218 University Ave SE Phone: 612-626-0815 Minneapolis, MN 55414-3029 Cell: 612-812-9952 ===============================================