On Thu, 10 Sep 2026, Jim Klimov via Nut-upsuser wrote:
> Kudos to the NetCube team, although with their occasional involvement in
> NUT
> issues and PRs I did not catch wind of such a product being prepared :\
> Still, the idea of shipping NUT onboard the UPS itself was long waiting for
> someone to pick it up, I think it can be derived from the wording of RFC 9271
> etc.
Hello Jim, This is exactly figure 3 in the RFC 9271 Protocol Overview
https://www.rfc-editor.org/info/rfc9271/#section-3 .
Out of curiosity I wondered where NUT stood with respect to the RFC. (I don't
say "conformance", since the RFC is not a Standard.) On the machine I use to
type this, I see :
rprice@titan ~ inxi -S
System:
Host: titan Kernel: 6.12.107+deb13-amd64 arch: x86_64 bits: 64
Desktop: Xfce v: 4.20.1 Distro: Debian GNU/Linux 13 (trixie)
rprice@titan ~ netcat localhost 3493
VER
Network UPS Tools upsd 2.8.1 - https://www.networkupstools.org/
HELP
Commands: HELP VER GET LIST SET INSTCMD LOGIN LOGOUT USERNAME PASSWORD STARTTLS
ATTACH
ERR UNKNOWN-COMMAND
LOGIN
ERR USERNAME-REQUIRED
So at version 2.8.1, as shipped by Debian, it was still LOGIN and LOGOUT rather
than the ATTACH and DETACH described by the RFC.
I'm not going to worry about this, but if UPS's appear that contain the NUT
Attachment Daemon upsd, then there may be a future interest in a Standards
Track
rewrite of RFC 9271, and conformance becomes a more serious matter.
Cheers, Roger
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