1#!/usr/local/bin/python2.7 2# send 2 ping6 fragments with hop-by-hop extension header 3 4import os 5from addr import * 6from scapy.all import * 7 8pid=os.getpid() & 0xffff 9payload="ABCDEFGHIJKLMNOP" 10packet=IPv6(src=SRC_OUT6, dst=DST_IN6)/ICMPv6EchoRequest(id=pid, data=payload) 11frag=[] 12frag.append(IPv6ExtHdrFragment(nh=58, id=pid, m=1)/str(packet)[40:56]) 13frag.append(IPv6ExtHdrFragment(nh=58, id=pid, offset=2)/str(packet)[56:64]) 14eth=[] 15for f in frag: 16 pkt=IPv6(src=SRC_OUT6, dst=DST_IN6)/IPv6ExtHdrHopByHop()/f 17 eth.append(Ether(src=SRC_MAC, dst=DST_MAC)/pkt) 18 19if os.fork() == 0: 20 time.sleep(1) 21 sendp(eth, iface=SRC_IF) 22 os._exit(0) 23 24ans=sniff(iface=SRC_IF, timeout=3, filter= 25 "ip6 and src "+DST_IN6+" and dst "+SRC_OUT6+" and icmp6") 26for a in ans: 27 if a and a.type == ETH_P_IPV6 and \ 28 ipv6nh[a.payload.nh] == 'ICMPv6' and \ 29 icmp6types[a.payload.payload.type] == 'Echo Reply': 30 id=a.payload.payload.id 31 print "id=%#x" % (id) 32 if id != pid: 33 print "WRONG ECHO REPLY ID" 34 exit(2) 35 data=a.payload.payload.data 36 print "payload=%s" % (data) 37 if data == payload: 38 exit(0) 39 print "PAYLOAD!=%s" % (payload) 40 exit(1) 41print "NO ECHO REPLY" 42exit(2) 43