dhcp_discover_pkg.py

import socket

s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET,socket.SO_BROADCAST,1)
s.bind(('0.0.0.0',68))

mymac='\x01\x02\x03\x04\x05\x06'  #your MAC Address
magic_cookie='\x63\x82\x53\x63'

pkg='\x01\x01\x06\x00\x11\x22\x33\x44' + ('\x00'*20) + mymac + ('\x00'*202) + magic_cookie
pkg+='\x35\x01\x01'     #DHCP Discover
pkg+='\x74\x01\x01'     #AutoConfigure
pkg+='\x3d\x07\x01'+mymac       #Client identifier
pkg+='\x37\x05\x01\x0f\x03\x06\x2b'     #Request List
pkg+='\xff\x00\x00'     #end

s.sendto(pkg,("255.255.255.255",67))