I still have my old Amiga 500 (with A590), an Amiga 1200 and an Amiga 4000. I've used the 4000 and a 14K4 modem to get on the internet for the first time some time during the '90s. That was fun, downloaded AmiTCP from a local BBS, bought a book about TCP/IP, read it cover to cover and started configuring AmiTCP.
But back on topic, I doubt anyone was or is working on porting FreeBSD to this board. The main focus of the PPC port appears to be old Apple PowerPC hardware. That makes sense, I'm sure there's a lot more of that hardware around.