Werk #16730: Remove HostAddress validator

Component Other components
Title Remove HostAddress validator
Date Sep 1, 2025
Level Trivial Change
Class Bug Fix
Compatibility Incompatible - Manual interaction might be required
Checkmk versions & editions
2.4.0p12
Not yet released
Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

This change is incompatible for plugin developers that used the HostAddress validator in the cmk.rulesets.v1 API of Checkmk 2.4. From the Checkmk Exchange we have no evidence of that being the case.

This element was added to the public API mistakenly, we and we decided to remove it.

If you used this element in one of your plugins, this plugin will only work in Checkmk versions 2.4.0b1 to 2.4.0p10. To fix this, you can simply copy the code into your plugin.

We're really sorry about this glitch, since this was the one thing that wasn't supposed to happen for a versioned API. We are adding some technical measures to avoid this happening again.

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