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Get IP of Device With Specific MAC Address in Script?

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HarryMuscle

Senior Member
Is it possible in a script to get the IP address of a device on the network if you know its MAC address?

Thanks,
Harry
 
Is it possible in a script to get the IP address of a device on the network if you know its MAC address?
Parse the content of /proc/net/arp .
 
Is it possible in a script to get the IP address of a device on the network if you know its MAC address?
Parse the content of /proc/net/arp .
If choosing this method, keep in mind that in the script you'll have to filter out any ARP cache entries that have the flag=0x0 (3rd entry from the left) which indicates that the entry is currently "incomplete" (i.e. it should be ignored).

For example:
Bash:
grep -i "AA:BB:CC:DD:EE:FF" /proc/net/arp | awk -F ' ' '{if ($3 != "0x0") {print $1,$4}}'

My 2 cents.
 

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