How to find out dynamic IPs using arp?

Question

Python

Good afternoon!
Faced the following problem: I have a list of test devices with mac addresses.
IP - dynamic.
How to know the actual IP of devices based on mac addresses?

Answer 1

Use the python_arptable module to read the ARP table:
pip install python_arptable

from typing import Optional

from python_arptable import get_arp_table


def get_ip_by_mac(macaddr: str) -> Optional[str]:
    if record := next(filter(lambda i: i['HW address'].lower() == macaddr.lower(), get_arp_table()), None):
        return record['IP address']


print(get_ip_by_mac('00:50:56:96:31:06'))  # 10.0.20.91