Werk #22503: acme_voltage: Fix crash during service discovery

Component

Checks & agents

Title

acme_voltage: Fix crash during service discovery

Date

Sep 29, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p15	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

On ACME Packet (Oracle) session border controllers, the service discovery crashed with ValueError: too many values to unpack (expected 3) as soon as the device reported voltage sensors, so no Voltage <sensor> services could be discovered.

Discovery now works again: every present voltage sensor gets its own service, sensors reported as not present are skipped as before.

To the list of all Werks