uboot pogoplug netconsole

I used this tip to set up my pogoplug to send the uBoot prompt
via udp to my laptop
(see: Use netconsole to troubleshoot uBoot without a serial cable
 http://forum.doozan.com/read.php?3,14,14)

Now, to get the boot prompt from pogoplug (192.168.1.74) to my laptop (192.168.1.72)
I do (on my laptop)

ifconfig en0 alias 192.168.1.72 255.255.255.0

to set an ip alias (remove with -alias), and then

nc -lu 192.168.1.72 6666 & nc -u 192.168.1.74 6666

to communicate with the pogoplug.