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Getting Incorrect Subnet

Nirmit79 asked
Medium Priority
Last Modified: 2009-12-16
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:  
Subnet Mask:
Default Gateway:

When I tried Pinging, 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.  
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I ran into a similar problem when one of my users turned on internet connection sharing. The laptop set itself up to issue addresses. Download a utility called look@lan and install it. Add both networks, and and then run it. It will match ip addresses to computer names which should help you track down the rogue computer.

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Thanks for the tip..Which machine would I be downloading it to?

You can run it from any machine, just be sure to add both networks so it will search out both subnets
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