[ 1793.488730] br0: port 1(dummy0) entered blocking state
[ 1793.488784] br0: port 1(dummy0) entered disabled state
[ 1793.488835] dummy0: entered allmulticast mode
[ 1793.488892] dummy0: entered promiscuous mode
[ 1793.492477] br0: port 1(dummy0) entered blocking state
[ 1793.492511] br0: port 1(dummy0) entered forwarding state
[ 1793.747921] dummy0: left allmulticast mode
[ 1793.747970] dummy0: left promiscuous mode
[ 1793.748069] br0: port 1(dummy0) entered disabled state