Ipad Connecting to WIFI as two devices with two MAC addresses

I have 1 iPad and no other Apple devices. I use Network Watcher also. It has always showed my ipad and one 1 as well. But just very recently it is showing up with another mac address that doesn't match the one my ipad says it has. Why has this all the sudden appeared as if i have 2 ipads? 2 different mac address each with 2 different ip addresses. Worried me as I thought my ipad got hacked. I am not super techy. But can anyone explain why this happened? Does it have anything to do with OS 14 firmware? I did update to OS 14.2 but the extra ipad didn't go away. Thanks so much.