[ 1636.738294] br0: port 1(dummy0) entered blocking state
[ 1636.738333] br0: port 1(dummy0) entered disabled state
[ 1636.738370] dummy0: entered allmulticast mode
[ 1636.738432] dummy0: entered promiscuous mode
[ 1636.741345] br0: port 1(dummy0) entered blocking state
[ 1636.741409] br0: port 1(dummy0) entered forwarding state
[ 1636.933242] dummy0: left allmulticast mode
[ 1636.933279] dummy0: left promiscuous mode
[ 1636.933309] br0: port 1(dummy0) entered disabled state