I am having trouble netbooting on my PB G3 266.  I have managed to get it
to load ofwboot.xcf from a FreeBSD box, but that's about as far as it
goes.  Then I start getting TFTP timeouts, something like this:

>> NetBSD/macppc OpenFirmware boot ....
>> ....
file: 192.168.1.1,
TFTP timeout
TFTP timeout
TFTP timeout
...

Tried to follow the instructions in the docs about Diskless booting, etc.
I have the netbsd and ofwboot.xcf files in a /tftpboot on the FreeBSD box,
tftp and bootp seem to be working OK.  

Any ideas?