Question

我正在寻找一种以编程方式（在C中）在Linux用户空间应用程序中发送免费ARP消息的方法。我注意到有一些文件用于在

的procfs中配置ARP

/proc/sys/net/ipv4/conf/<interface_name>

有没有办法通过ioctl调用相应的网络接口来执行此操作？

Answer 1

使用scapy：

from scapy.all import *

SELF_MAC = '02:02:02:02:02:02'    # fill in with your MAC address
BCAST_MAC = 'ff:ff:ff:ff:ff:ff'

def create_ARP_request_gratuituous(ipaddr_to_broadcast):
    arp = ARP(psrc=ipaddr_to_broadcast,
              hwsrc=SELF_MAC,
              pdst=ipaddr_to_broadcast)
    return Ether(dst=BCAST_MAC) / arp

# and then call sendp() with the result

发送免费ARP消息

1 个答案: