python使用原始套接字发送二层包(链路层帧)的方法

#!/usr/bin/python
# -*- coding: UTF-8 -*-

import socket
import struct

raw_socket = socket.socket(socket.PF_PACKET, socket.SOCK_RAW, socket.htons(0x1234))
raw_socket.bind(("eth0", 0))
packet = struct.pack("!6s6sH", "\xff\xff\xff\xff\xff\xff", "\xaa\xaa\xaa\xaa\xaa\xaa", 0x1234)
while True:
 print repr(packet)
 raw_socket.send(packet + "hello,world!")

struct ethhdr
{
 unsigned char h_dest[6];
 unsigned char h_source[6];
 uint16_t h_proto; //0x1234
};

#!/usr/bin/python
# -*- coding: UTF-8 -*-

import socket
import struct

raw_socket = socket.socket(socket.PF_PACKET,socket.SOCK_RAW,socket.htons(0x1234))
while True :
 packet = raw_socket.recv(1024)
 data = struct.unpack("!6s6sH12s", packet)
 print repr(data[0])
 print repr(data[1])
 print repr(data[2])
 print repr(data[3])