Hi Simon! Which kernel are you running with? Distribution or self-compiled. Either your xfrm kernel modules are not loading or they are not compiled.
I will have a quick look into it, with a clean squeeze install. If it works there (which I think it will) I will be closing the bug. Any how, I am reducing priority of this bug to normal as 0.8.0 is working well in testing/unstable. Cheers, Matthew
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