vcreate in script and system reset

[dmcgarty]

I am attempting to use an ipxe script to set up a vlan (2500) on net0 and initiate a dhcp on the interface (net0-2500). Here is the script I am trying to use.

#!ipxe

vcreate --tag 2500 net0
dhcp net0-2500

chain http://192.168.1.1/mboot.c32 -c http://192.168.1.1/boot.cfg

The system behaves as though the reset button is pushed a split second after the vcreate is run. I have shortened the script down to just:

#!ipxe

vcreate --tage 2500 net0
shell

to try and troubleshoot the problem but the reset occurs before I get the shell prompt. Here is the funny thing. If I type the Ctrl-B sequence, I can get to the ipxe prompt. From there if I type the vcreate, dhcp and chain commands manually at the commandline, it all works (!?). Any ideas why the commands in a script would cause a system reset where interactive entry of the same commands works fine?

Thanks