#!/usr/local/bin/python3 print("ping6 fragment without payload with other proto before first fragment") # || # |---------| # |----| import os from addr import * from scapy.all import * pid=os.getpid() eid=pid & 0xffff payload=b"ABCDEFGHIJKLMNOP" packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/ \ ICMPv6EchoRequest(id=eid, data=payload) frag=[] fid=pid & 0xffffffff frag.append(IPv6ExtHdrFragment(nh=59, id=fid, m=1)) frag.append(IPv6ExtHdrFragment(nh=58, id=fid, m=1)/bytes(packet)[40:56]) frag.append(IPv6ExtHdrFragment(nh=58, id=fid, offset=2)/bytes(packet)[56:64]) eth=[] for f in frag: pkt=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/f eth.append(Ether(src=LOCAL_MAC, dst=REMOTE_MAC)/pkt) if os.fork() == 0: time.sleep(1) sendp(eth, iface=LOCAL_IF) os._exit(0) ans=sniff(iface=LOCAL_IF, timeout=3, filter= "ip6 and src "+REMOTE_ADDR6+" and dst "+LOCAL_ADDR6+" and icmp6") for a in ans: if a and a.type == ETH_P_IPV6 and \ ipv6nh[a.payload.nh] == 'ICMPv6' and \ icmp6types[a.payload.payload.type] == 'Echo Reply': id=a.payload.payload.id print("id=%#x" % (id)) if id != eid: print("WRONG ECHO REPLY ID") exit(2) data=a.payload.payload.data print("payload=%s" % (data)) if data == payload: exit(0) print("PAYLOAD!=%s" % (payload)) exit(2) print("NO ECHO REPLY") exit(1)