[ 1783.255811] br0: port 1(dummy0) entered blocking state
[ 1783.255863] br0: port 1(dummy0) entered disabled state
[ 1783.255903] dummy0: entered allmulticast mode
[ 1783.255951] dummy0: entered promiscuous mode
[ 1783.259577] br0: port 1(dummy0) entered blocking state
[ 1783.259638] br0: port 1(dummy0) entered forwarding state
[ 1783.515230] dummy0: left allmulticast mode
[ 1783.515300] dummy0: left promiscuous mode
[ 1783.515376] br0: port 1(dummy0) entered disabled state