[ 1903.213744][ T7284] br0: port 1(dummy0) entered blocking state
[ 1903.213977][ T7284] br0: port 1(dummy0) entered disabled state
[ 1903.214195][ T7284] dummy0: entered allmulticast mode
[ 1903.215644][ T7284] dummy0: entered promiscuous mode
[ 1903.245144][ T7285] br0: port 1(dummy0) entered blocking state
[ 1903.245435][ T7285] br0: port 1(dummy0) entered forwarding state
[ 1905.235823][   T12] dummy0: left allmulticast mode
[ 1905.236794][   T12] dummy0: left promiscuous mode
[ 1905.237021][   T12] br0: port 1(dummy0) entered disabled state