Comment 0 for bug 1915829

The Open vSwitch init script `ovs-ctl` determines the system hostname and records it in the `external-ids:hostname` field of the `Open-vSwitch` table in the local OVSDB.

This value may be consumed by downstream software and having it unset or set to a incorrect value could lead to erratic behavior of a system.

In recent Ubuntu development we have also made it possible to configure Open vSwitch with netplan.io, which allows for a Open vSwitch controlled data path to be the only external network connection on a system.

As such the current startup sequence of Open vSwitch is insufficient to allow for reliable recording of FQDN / hostname at system boot-up time.

A possible solution to this would be to extend the upstream `ovs-ctl` script to allow controlling when the hostname is recorded and adding a new Systemd service file to the package that calls the `record-hostname` function at a more appropriate time, i.e. after or as part of the `network-online.target`.