[ 1893.526885] br0: port 1(dummy0) entered blocking state
[ 1893.526959] br0: port 1(dummy0) entered disabled state
[ 1893.527024] dummy0: entered allmulticast mode
[ 1893.527114] dummy0: entered promiscuous mode
[ 1893.530533] br0: port 1(dummy0) entered blocking state
[ 1893.530564] br0: port 1(dummy0) entered forwarding state
[ 1893.788114] dummy0: left allmulticast mode
[ 1893.788144] dummy0: left promiscuous mode
[ 1893.788179] br0: port 1(dummy0) entered disabled state