[ 1633.756748] br0: port 1(dummy0) entered blocking state
[ 1633.756813] br0: port 1(dummy0) entered disabled state
[ 1633.756880] dummy0: entered allmulticast mode
[ 1633.756963] dummy0: entered promiscuous mode
[ 1633.759827] br0: port 1(dummy0) entered blocking state
[ 1633.759860] br0: port 1(dummy0) entered forwarding state
[ 1633.962953] dummy0: left allmulticast mode
[ 1633.963144] dummy0: left promiscuous mode
[ 1633.963210] br0: port 1(dummy0) entered disabled state