Failed to set port hardware address

[candrews]

Using the activebackup configuration with two ports (one ethernet and one wifi), the ethernet port works great, but the wifi port does not.

When libteam tries to activate the port, it reports this error: wlan0: Failed to set port hardware address. dmesg has this message logged: team0: Device wlan0 is up. Set it down before adding it as a team port The port is then never used. teamdctl team0 state doesn't even show the port.

I suspect this may be related to https://github.com/jpirko/libteam/issues/18 - I cannot figure out how to team wifi. Notably, using bonding, this works fine.

I'm using NetworkManager 1.18.2, libteam 1.29, and Linux 5.3.0-rc3