Python-仅获取连接的本地NIC的MAC地址 [英] Python - Get MAC address of only the connected local NIC

问题描述

目标是收集连接的本地NIC的MAC地址，
而不是所有本地NIC的列表 ：)

The goal is to collect the MAC address of the connected local NIC, not a list of all local NICs :)

通过使用 socket 和 connect（to_a_website），
我可以只使用 getsockname（）获取用于连接到Internet的IP，
。

By using socket and connect (to_a_website), I can just use getsockname() to get the IP, that is being used to connect to the Internet.

但是如何从IP中获取本地NIC的MAC地址？

But from the IP how can I then get the MAC address of the local NIC ?

该问题的主要原因是是否有多个NIC。

Main reason for the question is if there are multiple NICs.

推荐答案

正如vartec建议的那样， netifaces 应该可以很好地用于IP-> iface：

As vartec suggested netifaces should work well to go from IP->iface:

    import netifaces as nif
    def mac_for_ip(ip):
        'Returns a list of MACs for interfaces that have given IP, returns None if not found'
        for i in nif.interfaces():
            addrs = nif.ifaddresses(i)
            try:
                if_mac = addrs[nif.AF_LINK][0]['addr']
                if_ip = addrs[nif.AF_INET][0]['addr']
            except IndexError, KeyError: #ignore ifaces that dont have MAC or IP
                if_mac = if_ip = None
            if if_ip == ip:
                return if_mac
        return None

测试：

    >>> mac_for_ip('169.254.90.191')
    '2c:41:38:0a:94:8b'

这篇关于Python-仅获取连接的本地NIC的MAC地址的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！