No serial console input in loader

[Anselm Strauss]

Hi,

I have a small router that has no video output, it only supports a  
serial console. I configured the serial console in /boot/boot.config, / 
boot/loader.conf and /etc/ttys. It's working in the BIOS, on the boot  
prompt before the loader starts, and when logging in on the getty. The  
only place where it's not working correctly is at the loader prompt. I  
can see the loader menu and the logo, but I can't choose the boot  
entry or interrupt the timeout. I can't make any input at all. What  
could this be?

Cheers,
Anselm