[ 1773.516116] br0: port 1(dummy0) entered blocking state
[ 1773.516164] br0: port 1(dummy0) entered disabled state
[ 1773.516203] dummy0: entered allmulticast mode
[ 1773.516254] dummy0: entered promiscuous mode
[ 1773.519811] br0: port 1(dummy0) entered blocking state
[ 1773.519849] br0: port 1(dummy0) entered forwarding state
[ 1773.791419] dummy0: left allmulticast mode
[ 1773.791461] dummy0: left promiscuous mode
[ 1773.791522] br0: port 1(dummy0) entered disabled state