[ 1742.329290] br0: port 1(dummy0) entered blocking state
[ 1742.329327] br0: port 1(dummy0) entered disabled state
[ 1742.329360] dummy0: entered allmulticast mode
[ 1742.329407] dummy0: entered promiscuous mode
[ 1742.332142] br0: port 1(dummy0) entered blocking state
[ 1742.332203] br0: port 1(dummy0) entered forwarding state
[ 1742.517053] dummy0: left allmulticast mode
[ 1742.517120] dummy0: left promiscuous mode
[ 1742.517207] br0: port 1(dummy0) entered disabled state