In article [ref] (at Fri, 30 May 2003 18:00:55 +0300 (EEST)), Ville Nuorvala [off-list ref] says:

there was a while ago some talk about an xfrm6_tunnel driver IIRC. I don't
know how far along the project is and what capabilities the xfrm6_tunnels
will have, but in the mean time I have an ipv6-in-ipv6 tunnel driver
specified in RFC 2473 to offer you. If the xfrm6_tunnels are going to
support ipv6-in-ipv6 you also might find the code useful.

The code exists in our repository.
Kanda-san is preparing patch for xfrm6_tunnel; 
patch will soon be available.

The tunnels are needed by MIPv6 for encapsulation and decapsulation of
tunneled packets between the home agent and mobile node. Some proctocols
like DHCP are also run over the virtual link between the MN and the home
network according to the MIPv6 specification.

I'm not sure if MIP6 will use this tunnel driver.

-- 
Hideaki YOSHIFUJI @ USAGI Project [off-list ref]
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