Re: [Ntp] New Version Notification for draft-rsalz-update-registries-00.txt

[Miroslav Lichvar <[e-mail]>]

On Wed, Jan 06, 2021 at 03:42:19PM +0000, Salz, Rich wrote:
>  This document marks the erroneous values as reserved.
> +- The field type registry includes the Field Type, as defined in Figure
> +14 of {{!RFC5905}}, but also the length. This is arguably an error, but
> +one we will preserve as existing software might depend on the length values
> +being fixed.

That doesn't seem right to me. The field type registry doesn't include
the length. All values there are 16-bit. The length is in the other 16
bits of the 32-bit EF header.

> -- Field Types in the range 0xD000 throught 0xFFFF, inclusive, are reserved
> +- Field Types in the range 0xD000 through 0xFF00, inclusive, are reserved

If we wanted to avoid non-zero values in the Autokey error and
response flags, the range would be 0x3000 through 0x3FFF. 

> -- Field Type (required): A two-byte value in hexadecimal.
> +- Field Type (required): A four-byte value in hexadecimal, that includes
> +the type as the top two bytes and the length as the bottom two.

Just 16 bits for the type, no length. (bytes are arch-specific.)

-- 
Miroslav Lichvar