#!/usr/local/bin/python3 # send a ping6 packet with routing header type 0 # the address pointer is at the final destination # we expect a parameter problem from header scanning print("send ping6 packet with routing header type 0 to the final destination") import os from addr import * from scapy.all import * eid=os.getpid() & 0xffff payload=b"ABCDEFGHIJKLMNOP" packet=IPv6(src=LOCAL_ADDR6, dst=REMOTE_ADDR6)/\ IPv6ExtHdrRouting(addresses=[OTHER_FAKE1_ADDR6, OTHER_FAKE2_ADDR6], \ segleft=0)/\ ICMPv6EchoRequest(id=eid, data=payload) eth=Ether(src=LOCAL_MAC, dst=REMOTE_MAC)/packet 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 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] == 'Parameter problem': pprob=a.payload.payload code=pprob.code print("code=%#d" % (code)) if code != 0: print("WRONG PARAMETER PROBLEM CODE") exit(2) ptr=pprob.ptr print("ptr=%#d" % (ptr)) if ptr != 42: print("WRONG PARAMETER PROBLEM POINTER") exit(2) exit(0) print("NO ICMP6 PARAMETER PROBLEM") exit(1)