[ 1919.167518] br0: port 1(dummy0) entered blocking state
[ 1919.167558] br0: port 1(dummy0) entered disabled state
[ 1919.167597] dummy0: entered allmulticast mode
[ 1919.167651] dummy0: entered promiscuous mode
[ 1919.171261] br0: port 1(dummy0) entered blocking state
[ 1919.171300] br0: port 1(dummy0) entered forwarding state
[ 1919.431290] dummy0: left allmulticast mode
[ 1919.431333] dummy0: left promiscuous mode
[ 1919.431361] br0: port 1(dummy0) entered disabled state