[ 1712.952470] br0: port 1(dummy0) entered blocking state
[ 1712.952504] br0: port 1(dummy0) entered disabled state
[ 1712.952535] dummy0: entered allmulticast mode
[ 1712.952584] dummy0: entered promiscuous mode
[ 1712.955268] br0: port 1(dummy0) entered blocking state
[ 1712.955332] br0: port 1(dummy0) entered forwarding state
[ 1713.138967] dummy0: left allmulticast mode
[ 1713.139026] dummy0: left promiscuous mode
[ 1713.139088] br0: port 1(dummy0) entered disabled state