Test Specification:
IPv6 Conformance Test For Path MTU Discovery
(for router)

No.	Title
	Test Start
1	Confirmation variable size of ping
2	Check receiving Packet Too Big Message
3	Check receiving Packet Too Big Message(Onlink)
4	Check storing PMTU for many destinations
5	Check increasing PMTU

Test Specification:IPv6 Conformance Test For Path MTU Discovery(for router)