[ 1606.956524] br0: port 1(dummy0) entered blocking state
[ 1606.956561] br0: port 1(dummy0) entered disabled state
[ 1606.956596] dummy0: entered allmulticast mode
[ 1606.956645] dummy0: entered promiscuous mode
[ 1606.959404] br0: port 1(dummy0) entered blocking state
[ 1606.959434] br0: port 1(dummy0) entered forwarding state
[ 1607.145887] dummy0: left allmulticast mode
[ 1607.145941] dummy0: left promiscuous mode
[ 1607.146035] br0: port 1(dummy0) entered disabled state