This rewrites the MAC address generation logic to distinguish between
MAC addresses assigned to a wireless interface or virtual / wired
interfaces.
Each radio is now assigned a range of SSIDs, allowing for up to 8 SSIDs
per radio. Previosuly, there were 8 MAC addresses total for the entire
device.
To keep compatibility on already deployed nodes, MAC addresses for wired
/ virtual interfaces stay unchanged.
This change is required to support nodes with more than 2 radios.
It also allows us to increase the number of VAPs per radio.
In multidomain setups, VXLAN is enabled by default, but can be disabled in
domain configs using the mesh/vxlan option. In single domain setups, the
mesh/vxlan option is mandatory.
The UCI option for legacy mode is removed.
Fixes#1364
Our VXLAN setup was changed to accept VXLAN packets without checksum almost
2 months ago, so we can disable sending the checksums now as well. Slightly
improves performance.
Also disabling TX checksums and not only allowing incoming packets without
checksum will provide another small speedup. As doing so would break wired
meshing with VXLAN-enabled nodes that require non-zero checksums, we will
wait a few days before this step.
