These exercises were passing problems for the network readings of Spring 2014.

All hosts involved (such as test6.dartmouth.edu) are running a
packet capture, and so should you! Show me your packet capture if your
packets somehow don't reach me (this may happen due to ISP filtering
or some such).

Pass:

0. Get some kind of IPv6 connectivity to send packets to test6.dartmouth.edu 
   (see below)

1. Send test6.dartmouth.edu an _fragmented_ ICMPv6 echo request, in two
     fragments. Your first name should be in the first packet, your
     last name in the second packet. You should receive an ICMPv6 echo reply
     packet -- save it.

2. Send test6.dartmouth.edu a DNS request with the DNS transaction ID 9999 
    for the IPv6 address of the hostname (all in lowercase)
            <your first name>.<last name>.test6.dartmouth.edu   
    (For me this would be  sergey.bratus.test6.dartmouth.edu)
    Record the answer and examine it.

    NOTE: my hacked DNS server script will give different DNS responses
          for transaction ID 9999 vs all others. Specifically, it will
          send back the IPv6 address of test6.dartmouth.edu for all IDs
	  *other* that 9999 --- check this with the "dig" tool. 

High Pass:

3. Send a fragmented ICMP6 packet as in (1) to the IPv6 address you
    find in the answer from (2), via test6.dartmouth.edu, so that only
    the first fragment reaches it, and the second expires on
    test6.dartmouth.edu's router (you should get the ICMPv6 expired-in-transit
    message back for the second fragment but not for the first).

-----------------------[ Notes on IPv6 connectivity ]---------------------

  See task5.txt for how to get IPv6 connectivity from a home network that
  only serves IPv6.