Bug ID 2262641: [BGP] Peering deadlock when modifying supported capabilities

Last Modified: Apr 21, 2026

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

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.1.3.1, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 21.0.0, 21.0.0.1

Opened: Apr 07, 2026

Severity: 4-Minor

Symptoms

When modifying capabilities BGP peering might enter a deadlock with local peer ignoring incoming and not creating outbound connections.

Impact

BGP peering enters a deadlock.

Conditions

Modifying BGP capabilities when local peer tries to connect.

Workaround

Remove peer (neighbor) configuration and reapply it.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips