Re: [DNSOP] I-D Action: draft-ietf-dnsop-rrserial-01.txt

[Dick Franks <[e-mail]>]

On Thu, 7 Apr 2022 at 14:48, Paul Vixie
<paul=[e-mail]> wrote:

>
> because IXFR and NOTIFY and UPDATE use serial numbers, the DNS protocol
> itself is aware of serial numbers. i hope that any recognition of
> non-traditional serial numbers will be an optional addition to the
> RRSERIAL response, and that if a zone has no actual serial number (so,
> it cannot participate in IXFR, NOTIFY, and UPDATE) the RRSERIAL value
> will just be a magic number like zero, or just missing altogether.
>

Magic numbers are messy.
Zero-length option preferred, same as the outbound request.
Need explicit statement somewhere that zero-length response means that
IXFR, NOTIFY, and UPDATE are not supported.

Not keen on the implementation-specific blob idea, which is of little
use to the general user. Implementers and power users will already
have more appropriate debugging tools.

--Dick