I have a server 2012 R2 box running DHCP for IP v4 and v6. In reviewing the leases for the IP6, there are a set that do not have names. These have a DUID type of 04 as shown in this picture:
I can't seem to figure out what these devices are. They don't show up in the DNS list for the network. They do not respond to a ping for the client IPv6 address. Does anybody know of some way to figure out what devices these leases relate to?
Hoping this isn't an indication of some intrusion...
Thanks, Ben