I’m not sure what the proper terminology is in this matter, but this has been driving me nuts.
Here’s the situation. In my network, DHCP is assigned by the router. Everyone once in a while (for the past couple weeks_ when my users turn on their computers they pick up the address of another computer in the network as the DNS server. Now it’s always the same address and I’ve tracked down the computer that I believe is causing this problem but I can’t find a thing wrong on it. So far I’ve run two full Malwarebytes scans and a full Symantec Antivirus scan. Nada!
I’ve checked that computer a few times now. It never fails to get the right DNS servers from the router.
Now here’s the really weird part. In the past when this happened the users who got the wrong DNS entry couldn’t access the Internet at all until I asked them to repair their network settings after which they get the right DNS entries. But today I’ve managed to surf the Internet for a full hour before I realized some slowdown and checked my DNS entry. To my surprise, it was the IP of that very machine.
Anyone ever deal with anything like this? I’d appreciate any ideas.