[ 1881.734693] br0: port 1(dummy0) entered blocking state
[ 1881.734720] br0: port 1(dummy0) entered disabled state
[ 1881.734743] dummy0: entered allmulticast mode
[ 1881.734779] dummy0: entered promiscuous mode
[ 1881.737981] br0: port 1(dummy0) entered blocking state
[ 1881.738027] br0: port 1(dummy0) entered forwarding state
[ 1881.974034] dummy0: left allmulticast mode
[ 1881.974112] dummy0: left promiscuous mode
[ 1881.974271] br0: port 1(dummy0) entered disabled state