How to get IPv4 nodes in IPv6-over-IPv4 tunnels

[Yann-Ju Chu]

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Hi,
	If I want to trace the IPv6 routers in the path, I can use traceroute(v6). However, If there is tunnel built in the path, the tool can not find any information. Is there any means (or protocol) to find any tunnel in a v6 path and the IPv4 routers in the tunnel?
					Chu
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