[ 1778.847853] br0: port 1(dummy0) entered blocking state
[ 1778.847900] br0: port 1(dummy0) entered disabled state
[ 1778.847934] dummy0: entered allmulticast mode
[ 1778.847992] dummy0: entered promiscuous mode
[ 1778.851271] br0: port 1(dummy0) entered blocking state
[ 1778.851303] br0: port 1(dummy0) entered forwarding state
[ 1779.085615] dummy0: left allmulticast mode
[ 1779.085651] dummy0: left promiscuous mode
[ 1779.085708] br0: port 1(dummy0) entered disabled state