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How to find IP address from mac address by spoofed request to DHCP server?

3 votes
3 answers
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EDIT the selected answer solves the broader problem that I was trying to solve, which is "Given selected mac addresses, how do I efficiently find each mac addresses corresponding IP address on the local network?". ORIGINAL: I need to write a program to find out the IP addresses of machines on my local network. I have the mac address of the machines. Given that DHCP servers return the same IP address for a given mac address, would it be possible somehow to send a DHCP request to the server, insert the known mac address, and capture the response, which presumably has the correct IP address in it for that mac address? FURTHER INFORMATION: I tried arpwatch and found it to be unreliable. Much more satisfactory was addrwatch https://github.com/fln/addrwatch
Asked by Duke Dougal (1135 rep)
Feb 19, 2018, 04:30 PM
Last activity: Jun 7, 2021, 05:16 PM