Code in neutron agent still uses brctl commands for some cases, which is obsolete. Linked launchpad initially suggested porting to "ip" commands, but pyroute2 sounds more promising/interesting
Code merged upstream.
Updated based on the latest downstream build from brew.
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/RHEA-2019:2811