Spurious DNS servers

Soldato
Joined
28 Dec 2003
Posts
16,669
Come into the office this morning and one machine is having issues resolving addresses.

Turns out that a couple of spurious DNS servers have appeared against the network adapter and I've no idea where from or how to get rid of them. The machine is on DHCP. If I try manually setting the DNS server for the adapter, it appears after the spurious ones.

Anyone have any ideas?
 
Someone has plugged a home router in? Do you have DHCP snooping enabled - that should have prevented the effect.
 
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