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 8dstaddr=sys.argv[1] 9pid=os.getpid() 10payload="ABCDEFGHIJKLOMNO" 11packet=IPv6(src=SRC_OUT6, dst=dstaddr)/ICMPv6EchoRequest(id=pid, data=payload) 12frag0=IPv6ExtHdrFragment(nh=58, id=pid, m=1)/str(packet)[40:56] 13frag1=IPv6ExtHdrFragment(nh=58, id=pid, offset=2)/str(packet)[56:64] 14pkt0=IPv6(src=SRC_OUT6, dst=dstaddr)/IPv6ExtHdrHopByHop()/frag0 15pkt1=IPv6(src=SRC_OUT6, dst=dstaddr)/IPv6ExtHdrHopByHop()/frag1 16eth=[] 17eth.append(Ether(src=SRC_MAC, dst=PF_MAC)/pkt0) 18eth.append(Ether(src=SRC_MAC, dst=PF_MAC)/pkt1) 19 20if os.fork() == 0: 21 time.sleep(1) 22 sendp(eth, iface=SRC_IF) 23 os._exit(0) 24 25ans=sniff(iface=SRC_IF, timeout=3, filter= 26 "ip6 and src "+dstaddr+" and dst "+SRC_OUT6+" and icmp6") 27a=ans[0] 28if a and a.type == ETH_P_IPV6 and \ 29 ipv6nh[a.payload.nh] == 'ICMPv6' and \ 30 icmp6types[a.payload.payload.type] == 'Echo Reply': 31 id=a.payload.payload.id 32 print "id=%#x" % (id) 33 if id != pid: 34 print "WRONG ECHO REPLY ID" 35 exit(2) 36 data=a.payload.payload.data 37 print "payload=%s" % (data) 38 if data == payload: 39 exit(0) 40 print "PAYLOAD!=%s" % (payload) 41 exit(1) 42print "NO ECHO REPLY" 43exit(2) 44