[ 1709.111044] br0: port 1(dummy0) entered blocking state
[ 1709.111128] br0: port 1(dummy0) entered disabled state
[ 1709.111204] dummy0: entered allmulticast mode
[ 1709.111298] dummy0: entered promiscuous mode
[ 1709.114762] br0: port 1(dummy0) entered blocking state
[ 1709.114796] br0: port 1(dummy0) entered forwarding state
[ 1709.340802] dummy0: left allmulticast mode
[ 1709.340879] dummy0: left promiscuous mode
[ 1709.340946] br0: port 1(dummy0) entered disabled state