Tunneling
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... working group has selected (manually
configured) IPv6-in-IPv4 tunneling [RFC4213] as one of the IPv6
transition mechanisms for IPv6 ...
... complete solution is to use IPsec to protect IPv6-in-IPv4 tunneling.
The document was intentionally not expanded to include the details on
how to set up an IPsec-protected ...
... topology by encapsulating them within IPv4 packets.
Tunneling can be used in a variety of ways.
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This is a generalization of host-to-router and router-to-host
tunneling, because the issues when connecting a whole site (using a
router) and connecting a single host ...
... While this might be an implementation matter for host-to-router
tunneling, having a similar entry, "Local=IPV6-PREF/48 & Remote=IPV6-
...
... tunnel endpoints is often behind a NAT, and configured
tunneling, using protocol 41, is not guaranteed to traverse the
NAT ...
... tunnel and a tunnel that might not always be possible
without other tunneling mechanisms.
2. Using NAT traversal ...
... When NAT is not applied, the second benefit would still be desirable.
In particular, using manually configured tunneling is an operational
challenge with dynamic IP addresses, because both ends need to be
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