ingress_filter.seq - Verify that the tunnel source address is
acceptable or not
Router
decapsulation_router.seq [-tooloption ...] -p
decapsulation_router.def
Before this test starts, run initialize.seq.
This test verifies that the tunnel source address is acceptable
before forwarding decapsulated packets
Network Topology
Link0
--------------------------
| |
TN NUT
| |
--------------------------
Link1
TN -- (Link0) -- NUT TN -- (Link1) -- NUT
--------------------- ------------------------
1.
===================>
IPv4 packet encapsulating IPv6 packet
Outer Header (IPv4)
src address : Off-link IPv4 address
dst address : NUT Link1 IPv4 address
Inner Header (IPv6)
src address : Off-link IPv6 global address
dst address : TN LINK0 IPv6 global address
2.
In NUT, received IPv4 packet is decapsulated, and forward
ICMPv6 Echo Request packet or not.
3.
<< JUDGMENT >>
NUT did not send ICMPv6 Echo Request
or
<===================
ICMPv6 Echo Request
IPv6 Header
src address : Off-link IPv6 global address
dst address : TN LINK0 IPv6 global address
<< PASS >>
NUT did not received ICMPv6 Echo Request
<< FAIL >>
NUT received ICMPv6 Echo Request
perldoc V6evalTool