BSD Router Project (BSDRP) is an open source router distribution based on FreeBSD that includes Quagga and Bird. It provides disk images which can be installed on Compact Flash cards, USB keys and hard disks. BSDRP targets small ISPs and datacenters, and configuration is done from CLI only (no WebGUI).
The value console can be:
vga: To be used with a vga card and keyboard as default console (but it's still possible to connect to the serial port)
serial: For headless use, use only serial port as default console