[ 1820.729534] br0: port 1(dummy0) entered blocking state
[ 1820.729609] br0: port 1(dummy0) entered disabled state
[ 1820.729686] dummy0: entered allmulticast mode
[ 1820.729772] dummy0: entered promiscuous mode
[ 1820.733077] br0: port 1(dummy0) entered blocking state
[ 1820.733107] br0: port 1(dummy0) entered forwarding state
[ 1820.940793] dummy0: left allmulticast mode
[ 1820.940828] dummy0: left promiscuous mode
[ 1820.940858] br0: port 1(dummy0) entered disabled state