[ 1551.993142] br0: port 1(dummy0) entered blocking state
[ 1551.993184] br0: port 1(dummy0) entered disabled state
[ 1551.993216] dummy0: entered allmulticast mode
[ 1551.993271] dummy0: entered promiscuous mode
[ 1551.995854] br0: port 1(dummy0) entered blocking state
[ 1551.995917] br0: port 1(dummy0) entered forwarding state
[ 1552.193155] dummy0: left allmulticast mode
[ 1552.193186] dummy0: left promiscuous mode
[ 1552.193210] br0: port 1(dummy0) entered disabled state