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Werk #16930: OVS bonding: bonds not discovered on recent Open vSwitch versions

Component Checks & agents
Title OVS bonding: bonds not discovered on recent Open vSwitch versions
Date Aug 19, 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
2.5.0p13
Not yet released 		Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p36 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.3.0p50
Not yet released 		Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Open vSwitch renamed its bonding terminology from slave to member, so ovs-appctl bond/show now reports for example

member eth2: enabled
  active member

instead of slave eth2: enabled / active slave.

Checkmk understood only the old wording. On hosts running such an Open vSwitch version, the ovs_bonding section was therefore parsed into nothing: neither the member interfaces nor the currently active interface were recognized, and no OVS Bonding interface service was discovered - even though the Linux agent delivered the section correctly.

Both spellings are now accepted, so older Open vSwitch versions keep working as before.

Affected hosts need a service discovery to pick up the new services.

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