[ 1800.344926] br0: port 1(dummy0) entered blocking state
[ 1800.344970] br0: port 1(dummy0) entered disabled state
[ 1800.345012] dummy0: entered allmulticast mode
[ 1800.345063] dummy0: entered promiscuous mode
[ 1800.348630] br0: port 1(dummy0) entered blocking state
[ 1800.348693] br0: port 1(dummy0) entered forwarding state
[ 1800.615376] dummy0: left allmulticast mode
[ 1800.615475] dummy0: left promiscuous mode
[ 1800.615539] br0: port 1(dummy0) entered disabled state