That is almost certainly the wrong console type selected.
That output you're seeing is sent to all consoles but after 'trying to mount root' only the primary console is used for most messages. The NIC link messages are still sent to both.
Make sure you did not install using a serial console as primary.
It should still boot fully from there though with em0 as WAN and em1 as LAN. You may still be able to connect to the webgui on LAN.
Steve