[ 2163.199611][ T6259] br0: port 1(dummy0) entered blocking state
[ 2163.199805][ T6259] br0: port 1(dummy0) entered disabled state
[ 2163.199980][ T6259] dummy0: entered allmulticast mode
[ 2163.201377][ T6259] dummy0: entered promiscuous mode
[ 2163.236552][ T6260] br0: port 1(dummy0) entered blocking state
[ 2163.236808][ T6260] br0: port 1(dummy0) entered forwarding state
[ 2165.628542][   T12] dummy0: left allmulticast mode
[ 2165.629409][   T12] dummy0: left promiscuous mode
[ 2165.629651][   T12] br0: port 1(dummy0) entered disabled state