[Babel-users] v4-over-v6 implementation

[Juliusz Chroboczek]

> This is what I actually had in mind. However, I haven't found a clean way
> to detect this (or ask the kernel), and my current way of doing it — which
> seems to work, but was only very lightly tested — is to install and
> retract immediately a v4-over-v6 route. If you know of some other way I'd
> gladly hear it!

Check the kernel version number by default.  Allows a user to override the
decision in the config file.

That's what we do with source-specific routing, and we've had no complaints.
See kernel.c line 114 and babeld.c line 171.

-- Juliusz