[ 2068.234668][ T3894] br0: port 1(dummy0) entered blocking state
[ 2068.234907][ T3894] br0: port 1(dummy0) entered disabled state
[ 2068.235148][ T3894] dummy0: entered allmulticast mode
[ 2068.236134][ T3894] dummy0: entered promiscuous mode
[ 2068.261345][ T3895] br0: port 1(dummy0) entered blocking state
[ 2068.262111][ T3895] br0: port 1(dummy0) entered forwarding state
[ 2070.571670][   T12] dummy0: left allmulticast mode
[ 2070.572357][   T12] dummy0: left promiscuous mode
[ 2070.572642][   T12] br0: port 1(dummy0) entered disabled state