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The EFI boot manager relies on having an IP address before trying to boot an EFI HTTP(s) boot entry. However, defining it as a boot or pre-boot command is not always the right answer since it will unconditionally add delay to the board boot, even if we don't boot over the network. So let's do a DHCP request from the boot manager, if 'ipaddr' is empty and fail early if we don't have an address. Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Tested-by: Michal Simek <michal.simek@amd.com>