BugZero | F5 BugID 818853 - Duplicate MAC entries in FDB

F5 - Defect ID: 818853

Duplicate MAC entries in FDB

F5 - Defect ID: 818853

Duplicate MAC entries in FDB

Last updated on July 18th, 2026

BugZero Risk Score
6.9 Medium

Overall: 6.9

Severity: 7.3

Community: 4.2

Lifecycle: 8.3

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Bug Details

Priority: 3-Major
Status: Verified
Impact Category: Local Traffic Manager

Description

Symptoms

Forwarding DataBase (FDB) not updated when a MAC moves among interfaces.

Impact

There are duplicate MAC address entries which come from multiple interfaces.

Conditions

-- Having multiple paths to a MAC in a given configuration.

Workaround

None.

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions:13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1

Fixed versions: 16.0.0, 15.1.0.2, 14.1.3.1, 13.1.3.5

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 16.0.0, 15.1.0.2, 14.1.3.1, 13.1.3.5

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F5 - Defect ID: 818853

Duplicate MAC entries in FDB

F5 - Defect ID: 818853

Duplicate MAC entries in FDB

Last updated on July 18th, 2026

BugZero Risk Score6.9 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 818853

Duplicate MAC entries in FDB

F5 - Defect ID: 818853

Duplicate MAC entries in FDB

Last updated on July 18th, 2026

BugZero Risk Score6.9 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.9 Medium

BugZero Risk Score
6.9 Medium