[ 1841.553324] br0: port 1(dummy0) entered blocking state
[ 1841.553372] br0: port 1(dummy0) entered disabled state
[ 1841.553406] dummy0: entered allmulticast mode
[ 1841.553463] dummy0: entered promiscuous mode
[ 1841.557564] br0: port 1(dummy0) entered blocking state
[ 1841.557637] br0: port 1(dummy0) entered forwarding state
[ 1841.841347] dummy0: left allmulticast mode
[ 1841.841388] dummy0: left promiscuous mode
[ 1841.841420] br0: port 1(dummy0) entered disabled state