[ 1963.011354][  T706] br0: port 1(dummy0) entered blocking state
[ 1963.011551][  T706] br0: port 1(dummy0) entered disabled state
[ 1963.011715][  T706] dummy0: entered allmulticast mode
[ 1963.012683][  T706] dummy0: entered promiscuous mode
[ 1963.042349][  T707] br0: port 1(dummy0) entered blocking state
[ 1963.042650][  T707] br0: port 1(dummy0) entered forwarding state
[ 1964.962311][   T12] dummy0: left allmulticast mode
[ 1964.963309][   T12] dummy0: left promiscuous mode
[ 1964.963555][   T12] br0: port 1(dummy0) entered disabled state