I have an Android phone connected to company Wi-Fi. I noticed recently the download arrow is always on. A little research shows that this is due to broadcast and/or multicast traffic. I fire up Wireshark and notice something seems to be up with extremely high ARP traffic (~75%). I did install a new AD / DNS server a few weeks ago. This could have started at the same time?
There is no recurring themes with the source & destination. It varies a ton.
Any ideas to look for?