[ 1863.566822] br0: port 1(dummy0) entered blocking state
[ 1863.566861] br0: port 1(dummy0) entered disabled state
[ 1863.566899] dummy0: entered allmulticast mode
[ 1863.566951] dummy0: entered promiscuous mode
[ 1863.570368] br0: port 1(dummy0) entered blocking state
[ 1863.570398] br0: port 1(dummy0) entered forwarding state
[ 1863.817704] dummy0: left allmulticast mode
[ 1863.817741] dummy0: left promiscuous mode
[ 1863.817771] br0: port 1(dummy0) entered disabled state