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Description of problem:

Nmstate should report to the user that NetworkManager-ovs plugin is not available before the activation phase. In order to accomplish this, NetworkManager needs to expose NM_CAPABILITY_OVS.

Actual results:

The proposed workaround makes sure to report correctly that OVS is not available when the user tries to change/create it. But this is happening during the activation phase.

https://github.com/nmstate/nmstate/pull/622

Expected results:

Nmstate should report to the user that NetworkManager-ovs plugin is not available during the verification phase.

Additional info:

Command to get the capability info from NM:

busctl --json pretty call org.freedesktop.NetworkManager /org/freedesktop org.freedesktop.DBus.ObjectManager GetManagedObjects | jq '.data[0]["/org/freedesktop/NetworkManager"]["org.freedesktop.NetworkManager"]["Capabilities"]'
the "2" means OVS

Upstream patch: https://github.com/nmstate/nmstate/pull/792

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:1696