dhcp.py 文件源码

def __init__(self, ifname):
        self.ifname = ifname
        self.poll = select.epoll()
        self.sock = socket.socket(socket.AF_PACKET, socket.SOCK_RAW,
                                  socket.htons(pnet.ETH_P_ALL))
        self.poll.register(self.sock, select.POLLIN | select.POLLPRI |
                           select.POLLHUP | select.POLLERR)
        attach_filter(self.sock, bootp_filter())
        self.sock.setblocking(0)
        self.sock.bind((ifname, 3))

        ifreq = get_ifreq(self.sock, ifname)
        self.src = pnet.HWAddress(ifreq[18:24])