dbprofile/​lanboot and PXE-E18 error

Use dbprofile and lanboot on an Itanium server but get this:
PXE-E18: Server response timeout.

and this shows up in the ignite server's syslog:
tftp: client does not accept options
receive: RRQ /opt/ignite/boot/hpux.efi octet blksize 16384
send: OACK  blksize 16384
send_file: recv: Can't assign requested address
receive: RRQ /opt/ignite/boot/hpux.efi octet blksize 16384
send: OACK  blksize 16384
send_file: recv: Can't assign requested address
receive: RRQ /opt/ignite/boot/hpux.efi octet blksize 16384
send: OACK  blksize 16384
Transfer timed out

Then add the following option to the tftpd entry in inetd.conf:
-s -r blksize

so something like this:
tftp        dgram  udp  wait   root /usr/lbin/tftpd    tftpd -s -r blksize /opt/ignite /var/opt/ignite

See this for full instructions:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=4077173&prodTypeId=18964&objectID=c03083630