I’m not sure. So far my Communication Services group have found this when looking at a tcpdump:
“The conversation had two packets one from your server to the endpoint, and the other was from the local Cisco switch back to your server. The Cisco switch sent a reset packet back to your server. The Cisco switch does not have a route to that subnet, so it sent back the proper response to your server, a reset packet.”
ADDM seems to have interpted this as a “valid response” and continued scanning the endpoint.
It sounds like I need to open a support ticket or is this something that is not related to ADDM?