Implement multi domains

[maurerle]

Why

• reduce onboarding time
• don't require long list of vpn endpoints
• make it possible to administrate by geolocation
• use common gluon domain features
• further increase scalability of FFAC domains

How

We could use something like:
https://github.com/freifunkh/ffh-packages/blob/master/gluon-segment-mover/

which also has a backend like this one:
https://github.com/ff3l/ff3l-api
(though the signature features is missing here I think)

This was temporarily used in freifunkh, as it adds traffic by requesting the API every 5 minutes.

One could add a trigger to nodes, so that they only request their api if the node was reached.

Related communities approaches

• FFMUC has separate domains which are decided by the user - separate domains do not mesh together (neither through VXLAN, nor through Wifi-mesh)
• FFS resolves the DNS to different ip addresses, depending on the requesting node - which is also cumbersome
• FFH used to use the gluon-segment-mover, but does not anymore, has normal domains instead
• FFNW uses the hoodselector