[Babel-users] How to configure babeld?

[Marek Küthe]

Hello,

I'm trying to configure babeld for some time, however I do not manage
to do so.

I find enormously few examples on the internet. Furthermore, I do not
understand the difference between the filter in, out and redistribute.

Therefore I have some questions:
1) Suppose I get a route from a babel neighbor and I redistribute it,
which filters does this route go through? According to my logic `in ->
redistribute -> out`.
2) Assuming I now have a /56 prefix configured on
an interface and want to redistribute it, I only need to allow this in
the out filter, right?

I am currently trying to write the following configuration:
1) I want to send a local prefix /56 to all babel nodes. If the own /56
prefix is received, it should be rejected.
2) Only ULA routes with a prefix length between 44 and 64 should be
propagated from the babel neighbors. These are to be installed also with
one in the kernel.

Currently I have the following configuration.
However this does not work.
```
random-id true
link-detect true
interface my_peer type tunnel

out local ip fd5c:3e37:2666:6a00::/56 allow

in ip fd::/8 ge 44 le 64
out ip fd::/8 ge 44 le 64
redistribute ip fd::/8 ge 44 le 64

in deny
out deny
redistribute deny
```
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