Submariner 0.15.3 Release

[Daniel Farrell]

Hello,

Submariner 0.15.3 is released!

• The subctl diagnose command has been enhanced to check for potential firewall issues that may be blocking ESP traffic and will provide an appropriate error message.
• Submariner now explicitly enables forwarding on the interfaces that it creates to support forwarding even when global forwarding on the node is turned off.
• Enhanced Calico CNI detection now includes searching for calico-node CNI pods when the calico-config map is not detected.
• Submariner now explicitly configures dpddelay when initiating IPsec connections to prevent excessively frequent liveness probes.
• Service Discovery will now publish DNS records for pods that are not ready based on the setting of the publishNotReadyAddresses flag on the service.
• The CNI detection method in Submariner Operator is now improved to detect the Flannel CNI, even when the Flannel configMap is missing from the cluster.
• Submariner now ensures that the IPsec control socket is created before initiating connection requests, and also automatically retries connections in response to errors reported by the ‘whack’ command.
• The pod CIDR detection logic now ensures that the node’s podCIDR is exclusively used for single-node deployments.
• The Submariner gateway now retries reading local node information on startup to reduce pod restarts if the Kubernetes API server is temporarily unavailable.
• Reduced data path downtime with Libreswan cable driver when gateway pod restarts.

https://submariner.io/community/releases/#v0153-november-3-2023

Thank you everyone who contributed!