BugZero | F5 BugID 2329957 - Stale mac masquerade fdb entires are observed on r...

F5 - Defect ID: 2329957

Stale mac masquerade fdb entires are observed on rSeries devices after killing tmm on the active tenant.

F5 - Defect ID: 2329957

Stale mac masquerade fdb entires are observed on rSeries devices after killing tmm on the active tenant.

Last updated on August 13th, 2026

BugZero Risk Score
8.4 High

Overall: 8.4

Severity: 9.1

Community: 4.2

Lifecycle: 7.0

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Bug Details

Priority: 2-Critical
Status: Verified
Impact Category:

Description

Symptoms

Stale mac masquerade fdb entires are observed on rSeries devices after killing tmm on the active tenant.

Impact

- traffic disruption possible

Conditions

- HA setup using mac masquerade - the active tmm is killed

Workaround

- perform manual failover twice 'tmsbh run sys failover standby` to remove the unnecessary entries.

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.1.3.1, 17.1.3.2, 17.1.3.4, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8, 21.0.0, 21.0.0.1, 21.0.0.2, 21.0.0.3, 21.1.0, 21.1.0.1

Fixed versions: No known fixed versions

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: No known fixed versions

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F5 Integration

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F5 - Defect ID: 2329957

Stale mac masquerade fdb entires are observed on rSeries devices after killing tmm on the active tenant.

F5 - Defect ID: 2329957

Stale mac masquerade fdb entires are observed on rSeries devices after killing tmm on the active tenant.

Last updated on August 13th, 2026

BugZero Risk Score8.4 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 2329957

Stale mac masquerade fdb entires are observed on rSeries devices after killing tmm on the active tenant.

F5 - Defect ID: 2329957

Stale mac masquerade fdb entires are observed on rSeries devices after killing tmm on the active tenant.

Last updated on August 13th, 2026

BugZero Risk Score8.4 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
8.4 High

BugZero Risk Score
8.4 High