OptionalbootIf specified will pass option 67 to interface's DHCP server
OptionalntpIf specified will pass the configured NTP server to the VM via DHCP option 042.
OptionalprivateIf specified will pass extra DHCP options for private use, range: 224-254
OptionaltftpIf specified will pass option 66 to interface's DHCP server
Extra DHCP options to use in the interface.