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Release Notice: LoadMaster LMOS LTS

Release Notice: LoadMaster LMOS LTS

Release Date: 3 February 2023


Update Image Verification:

By default, verification of the digital signature on upgrade images is required in LMOS 7.2.50 and above. See the Update Verification Options setting under System Administration > Miscellaneous Options > WUI Settings. If the unit you are upgrading is set to require validation, you'll need to supply the XML Verification File supplied with this release.

Note that:

  • In previous releases, two verification files were provided: one for pre-7.2.51 systems and one for later systems. This restriction has been removed with this release; use the same XML file regardless of the LMOS version from which you are upgrading.
  • LoadMasters running an LMOS version prior to 7.2.49 do not provide the option of XML file verification in the UI or API. If you are upgrading from one of these releases to this release, you can verify the digital signatures offline using a manual process documented on the support website.

If you are currently running LMOS 7.1.x or an earlier version, please see the article Kemp LoadMaster Firmware Upgrade Path for full upgrade path information.

Issues Resolved:

This is a hotfix for the LoadMaster LTS (Long Term Support) release that addresses the following issue experienced by some GEO users:

  • Fixed an issue where GEO system processes were exiting abnormally, possibly causing reboots, when DNS TSIG messages were received.

Download Links:

Download Current LTS Version -

Recommended Reading:

For full details on this release, please see the LoadMaster Release Notes

To get the latest firmware updates please visit our Firmware Downloads page.


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