Bug ID 516877: Changes to LSN pool egress-interfaces configuration are ignored

Last Modified: Oct 07, 2023

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

Known Affected Versions:
11.4.0, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.1.0, 12.0.0

Opened: Apr 07, 2015

Severity: 3-Major


Changes to the LSN pool egress interface configuration are not fully applied until TMM is restarted. This affects inbound and hairpin connections. For these connections, changes such as adding or deleting interfaces in the egress interface list and enabling or disabling egress interfaces are ignored.


Inbound and hairpin connections using an enabled egress interface may fail when they should succeed. Alternatively connections using a disabled egress interface may succeed when they should fail.


LSN Pools with inbound and/or hairpin connections enabled.


As a work around, after making changes to the egress interface configuration, disable both inbound and hairpin connections on the LSN pool and then re-enable them. This causes the changes to the egress interface configuration to be applied.

Fix Information

Changes to LSN pool egress-interfaces configuration are fully applied immediately.

Behavior Change

Guides & references

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