Something wrong with DHCP in Alpine #4

Hello! I'm using the official PoE hat on my Pi 4 and tried to set up Alpine Linux, but it's not showing up in my router nor does it have an IP assigned. I think DHCP is disabled by default.

This fixed it for me:
ip link set eth0 up

Now it gets an IPv4 and IPv6 address, but I can't SSH into it.

I just about everything. I was able to install OpenSSH and configure it, but port 22 is closed. You've probably gone through some magic to get this working 😆.

The networking configs don't exist at all, so something's wrong at that level.