I have our internal Subnet as 192.168.1.x but for some reason, some of the machines would start getting their IP addresses in the subnet of 192.168.8.x .. Now I checked on my DHCP server..There is no instance of that subnet mentioned..
When i did IPCONFIG /ALL I found out that the ones taking as 192.168.8.x are showing the following:
IP Address: 192.168.8.25
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.8.1
When I tried Pinging 192.168.8.1, it was successful..When I tried to telnet, it prompt me a password but I failed to login as I could not guess the right password. I am not sure how to detect the machine and how to solve it.