Appendix D: Bulk Configuration or Firmware Upgrade via DHCP/TFTP702 code 3 (pdu-update-magic) = any stringThis third option/code is the magic cookie to prevent thefwupdate.cfg commands from being executed repeatedly. It doesNOT matter whether the IPv6 magic cookie is identical to ordifferent from the IPv4 magic cookie.The magic cookie is a string comprising numerical and/oralphabetical digits in any format. In the following illustrationdiagram, it is a combination of a date and a serial number.Important: The magic cookie is transmitted to and stored in PX3TS atthe time of executing the "fwupdate.cfg" commands. TheDHCP/TFTP operation is triggered only when there is a mismatchbetween the magic cookie in DHCP and the one stored in PX3TS.Therefore, you must modify the magic cookie's value in DHCP whenintending to execute the "fwupdate.cfg" commands next time.IPv6 illustration example in dhcpd6.conf:
