Last Modified: Jun 25, 2026
Affected Product(s):
BIG-IP (all modules)
Fixed In:
17.5.1.6
Opened: Feb 17, 2026 Severity: 2-Critical
On first attempt after creation of device group, devices are not getting into the "In Sync" state.
Devices stay out of sync for a longer duration blocks config sync and failover
Reproducible on the instances with HA setup
Multiple attempts and after few minutes, devices get into the sync
Added relevant TCP headers and updated the package handling.