You could try to fix your br0 configuration. This video helped me set mine up:
Just wanted to show every how to set up a Bridge in Truenas Scale, never actually seen a video on it so figured it better to show one myself,0:00 Intro1:50 G...
youtu.be
In particular, take note of the 'Troubleshooting' section of the video. Here's a link to that timestamp:
Just wanted to show every how to set up a Bridge in Truenas Scale, never actually seen a video on it so figured it better to show one myself,0:00 Intro1:50 G...
youtu.be
Perhaps you might have a configuration db backup available from just before you created the br0, so you could roll back to that setup? Have a look in
/var/db/system/configs-{some_unique_string}/TrueNAS-SCALE-{release_version}
(where
{some_unique_string}
and
{release_version}
are unique to your system)
You should be able to use a .db file from there to upload and restore via the WebGUI > System Settings > General > Manage Configuration > Upload File
Otherwise, the only way I know of to reset the network config settings, is to reinstall from scratch. But then you would of course reset all configuration settings back to default...