[ 1866.554381][ T6922] br0: port 1(dummy0) entered blocking state
[ 1866.554562][ T6922] br0: port 1(dummy0) entered disabled state
[ 1866.554722][ T6922] dummy0: entered allmulticast mode
[ 1866.555687][ T6922] dummy0: entered promiscuous mode
[ 1866.584013][ T6923] br0: port 1(dummy0) entered blocking state
[ 1866.584263][ T6923] br0: port 1(dummy0) entered forwarding state
[ 1868.557573][   T70] dummy0: left allmulticast mode
[ 1868.558266][   T70] dummy0: left promiscuous mode
[ 1868.558492][   T70] br0: port 1(dummy0) entered disabled state