[ 1546.245457] br0: port 1(dummy0) entered blocking state
[ 1546.245504] br0: port 1(dummy0) entered disabled state
[ 1546.245537] dummy0: entered allmulticast mode
[ 1546.245591] dummy0: entered promiscuous mode
[ 1546.248115] br0: port 1(dummy0) entered blocking state
[ 1546.248150] br0: port 1(dummy0) entered forwarding state
[ 1546.410916] dummy0: left allmulticast mode
[ 1546.410951] dummy0: left promiscuous mode
[ 1546.411010] br0: port 1(dummy0) entered disabled state