Bug ID 2138265: Azure VM hangs with wait_func_handle_exec_timeout() when using 6+ interfaces

Last Modified: Dec 06, 2025

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
17.1.3, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3

Opened: Oct 22, 2025

Severity: 3-Major

Symptoms

With 6+ interfaces attached on Azure, VM can hang at mlx5_core driver's wait_func_handle_exec_timeout.

Impact

You cannot fully boot the Azure VM.

Conditions

-- Using Azure -- Attach 6+ interfaces -- Using BIG-IP without ID2044417 fix

Workaround

Attach 3 or less interfaces before booting into new volume with ID2044417 fix.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips