gluon-core: Document support for additional wired mesh-interfaces

[margau]

Documents the changes introduced in #2041.

[neocturne]

Hmm, I do see one issue with documenting this in the official docs though: We may reassign indices in the future, causing conflicts with additional mesh interface specifications. It might be better to describe this in the Wiki as an "unsupported" feature instead.

[margau]

Hmm, I do see one issue with documenting this in the official docs though: We may reassign indices in the future, causing conflicts with additional mesh interface specifications. It might be better to describe this in the Wiki as an "unsupported" feature instead.

I really see the need for this feature as official supported in some day-to-day-deployments.

With indices, the index used for generating the MAC is meant? I'd suggest to leave this part offical, state that only indices from unused features should be used, and discuss a possible expansion of the indices in another issue?

[rotanid]

see also #1983 for mac generation

[blocktrron]

This is now supported: https://github.com/freifunk-gluon/gluon/commit/28a4722cc7b60aa3ce2a1ee7cb9c9ffe0b7ea8b3