Werk #18536: MAC addresses are reported correctly for Windows

Component

Checks & agents

Title

MAC addresses are reported correctly for Windows

Date

Oct 10, 2025

Level

Trivial Change

Class

Bug Fix

Compatibility

Incompatible - Manual interaction might be required

Checkmk versions & editions

2.5.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p16	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.3.0p40	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Previously, the physical MAC address of the network interface was reported incorrectly: instead of six hexadecimal values, eight were returned, with the last two always being zeros.

This issue has been fixed in this release. Due to the change in reported values, rediscovery of certain network interface services may be required.

To the list of all Werks