> one promising project is this one: https://www.turris.cz/en/

That does look promising. The existing software is OpenWRT, so porting CeroWRT shouldn't be difficult.

The P2020 CPU is a PowerPC Book E type - basically a 603e with the FPU ripped out, then turned into an SoC. It should have loads of performance, and enough I/O to feed those GigE ports effectively.

The only real software concern should be that it's big-endian, but since I already use an old PowerBook as a firewall, that's unlikely to be a big hurdle. Fq_codel works well on it.

- Jonathan Morton