How to check mac address on your network3/15/2024 Ping the default gateway for a few seconds. Once you’ve got an IP from the rogue, look at the ethernet adaptor’s status, and get the IP of the default gateway. info or /var/lib/NetworkManager/ will contain the dhcp-server-identifier info on Linux, and something in the Windows Event Logs will show similar :-) Kyle Gordon pointed out that this initially assumes that the DHCP server is the same as the default gateway. You might need to disable the main DHCP server to allow this to happen, as DHCP is a broadcast protocol, so it’s really a case of the early bird getting the worm. Allow a device to get an IP address from the rogue server.Some clients report a different IP address, subnet mask and default gateway, compared to others.Ĭaveats: Without a managed switch fabric, this is considerably more difficult. Symptoms: Some clients are unable to connect to the internet. SeptemThis blog post is *ancient*, and preserved only for historical record. Devopstom's Blog How To: Find a rogue DHCP server on your network
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