Does ethernet work on x15 console images by default?

I finally got a console image flashed onto my x15, and it seems Ethernet doesn't work. I get no link lights on either port, and eth0 and eth1 are both DOWN. If I issue /sbin/ifconfig eth0 up, I don't get any errors, and the state changes to UP, but I still get no link light nor IP address. /etc/network/interfaces seems to be set up for DHCP:

auto eth0
iface eth0 inet dhcp

I've tried multiple Ethernet cables and ports on the switch.

Any suggestions? Am I just missing something obvious, or is my board hosed?


I just tried the IoT image, and Ethernet comes up just fine. I clearly don't understand the differences in the images.