Major distributions are not shipping Libreswan v5 yet, but they will start soon, including Fedora and later, likely, RHEL 10.

Libreswan 5 deprecated ipsec auto command that ovs-monitor-ipsec is heavily relying on.  In practice, however, ipsec auto is just broken for our use case in v5, see https://github.com/libreswan/libreswan/issues/1726 .

Need to migrate out of ipsec auto. Ideally, replacing with commands that work in both v4 and v5 to avoid version checking within ovs-monitor-ipsec.