[ 1898.118016] br0: port 1(dummy0) entered blocking state
[ 1898.118064] br0: port 1(dummy0) entered disabled state
[ 1898.118107] dummy0: entered allmulticast mode
[ 1898.118159] dummy0: entered promiscuous mode
[ 1898.121652] br0: port 1(dummy0) entered blocking state
[ 1898.121714] br0: port 1(dummy0) entered forwarding state
[ 1898.364806] dummy0: left allmulticast mode
[ 1898.364849] dummy0: left promiscuous mode
[ 1898.364878] br0: port 1(dummy0) entered disabled state