CODEWITHSUNDEEP
pythonlinuxnetwork-programming
David Mulder
David Mulder

Reputation: 8017

How to get ip address from known mac address on Linux using Python

How would I find the ip address if I know the mac address of a machine?

Upvotes: 0

Views: 2944

Answers (1)

David Mulder
David Mulder

Reputation: 8017

I needed to be able to do this, so I wrote a python script that can do it:

import scapy
from multiprocessing import Process, Pool

def _arp_request(ip_addr):
    answer, _ = srp(Ether(dst="ff:ff:ff:ff:ff:ff")/ARP(pdst=ip_addr), verbose=0, timeout=.5)
    if answer:
        return (answer[0][1].src, answer[0][0].pdst)

pool = Pool(50)
mac_addrs = [ad for ad in pool.map(_arp_request, addrs) if ad]

addrs is a list of possible ip addresses to try.

It makes rapid arp requests and maps out the network.

Or you could use the module that I wrote (which keeps a cache to minimize the arp requests):

>>> from ethip import ethip
>>> print ethip.getip('00:1E:C9:56:3C:8E', '10.5.42.255')
10.5.42.3

Upvotes: 1

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