Last Modified: Oct 16, 2026
Affected Product(s):
BIG_IP_NEXT(BNK) BNK
Known Affected Versions:
2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4
Opened: Apr 14, 2026 Severity: 3-Major
On OpenShift clusters using OVN-Kubernetes networking, GSLB Engine is unable to establish TCP connections for inter-cluster communication. The initial connection handshake begins successfully, but subsequent packets are dropped by the network layer, causing connection failures. GSLB streams between clusters remain in a reconnecting state, and GSLB servers report "No enabled virtual server available" with monitor timeouts.
GSLB synchronization between clusters fails. Health monitors cannot reach remote virtual servers, causing GSLB to mark all servers as unavailable. DNS load balancing across clusters does not function correctly.
OpenShift 4.14 or later cluster using OVN-Kubernetes as the networking plugin. GSLB Sync Group configured with multiple clusters requiring inter-cluster communication.
Adjust the network routing rule priority configuration.
None