HH_BadHdrExtLen - Bad Hdr Ext Len in Hop-by-Hop Options Header
Host and Router
HH_BadHdrExtLen.seq [-tooloption ...] -pkt HH_BadHdrExtLen.def
-tooloption : v6eval tool option
1. Check Link0 Link Local address Reachability
2. Check support of Hop-by-Hop Options Header
1. Send bad Echo Request
2. Wait 5 sec.
3. Send Echo Request
4. If NS received then send NA, and wait Echo Reply again
5. Receive Echo Reply
Bad Echo Request Data is:
IPv6 Header
Version = 6
Traffic Class = 0
FlowLabel = 0
PayloadLength = 24
NextHeader = 0 (Hop-by-Hop Options Header)
HopLimit = 64
SourceAddress = Tester Link Local Address
DestinationAddress = Target Link Local Address
Hop-by-Hop Options Header
NextHeader = 58 (ICMPv6)
HeaderExtLength = 100 (It' bad. True value is 0.)
Opt_PadN
OptionType = 1
OptDataLength = 4
pad = {0, 0, 0, 0}
ICMPv6 Echo Request
Type = 128 (Echo Request)
Code = 0
Checksum = (auto)
Identifier = 0
SequenceNumber = 0
PayloadData = {1, 2, 3, 4, 5, 6, 7, 8}
PASS : echo reply packet received.
FAIL : don't received echo reply packet.
perldoc V6evalTool