Dst_Unreach_4_Link-Local.seq - check ICMPv6 Destination Unreachable code 4
Host/Router
Dst_Unreach_4_Link-Local.seq [-tooloption ...] -p Dst_Unreach_4_Link-Local.def
When test starts, states of Neighbor Cache Entry for TN's addresses are reachable.
This test verifies that NUT sends valid ICMPv6 Destination Unreachable (code 4) in response to a packet which can not be delivered to destination port. And this test verifies that the message processing rule ,
If the message is a response to a message sent to one of the node's unicast addresses, the Source Address of the reply must be that same address.
TN NUT
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1. === UDP packet ===> src address : TN link local address dst address : NUT link local address port : not used in NUT 2. << JUDGMENT >>
<=== ICMPv6 Destination Unreachable === Code is 4
<< PASS >> NUT send ICMPv6 Destination Unreachable.
<< FAIL >> NUT do not send ICMPv6 Destination Unreachable.
perldoc V6evalTool