[code sync] Merge code from sonic-net/sonic-utilities:202605 to 202606 - #455
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mssonicbld
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Sep 10, 2026
mssonicbld
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When GCU deletes a VLAN prefix from CONFIG_DB, intfmgrd asynchronously removes the address and its neighbors from the kernel. The subsequent ip neigh flush in vlanintf_validator can race with this removal and fail with ENOENT ("No such file or directory"), which is benign since the neighbors are already gone.
Treat this specific failure as success instead of logging ERR records that cause LogAnalyzer teardown failures in test suites. Other flush failures (device not found, etc.) still fail as before.
The change can be verified by reproducing the scenario by running generic_config_updater/test_vlan_interface.py::test_vlan_interface_tc1_suite sonic-mgmt test.
What I did
Given the scenario not being an ERR state, change the vlanintf_validator behavior to not log benign messages as ERRs
How I did it
By NOT logging benign ENOENT in vlanintf_validator as syslog ERR
How to verify it
The change can be verified by reproducing the scenario by running generic_config_updater/test_vlan_interface.py::test_vlan_interface_tc1_suite sonic-mgmt test.
Previous command output (if the output of a command-line utility has changed)
New command output (if the output of a command-line utility has changed)
closes #4836
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/azp run |
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