[ 1933.170168][ T1809] br0: port 1(dummy0) entered blocking state
[ 1933.170376][ T1809] br0: port 1(dummy0) entered disabled state
[ 1933.170548][ T1809] dummy0: entered allmulticast mode
[ 1933.171460][ T1809] dummy0: entered promiscuous mode
[ 1933.191959][ T1810] br0: port 1(dummy0) entered blocking state
[ 1933.192331][ T1810] br0: port 1(dummy0) entered forwarding state
[ 1935.213167][   T70] dummy0: left allmulticast mode
[ 1935.213403][   T70] dummy0: left promiscuous mode
[ 1935.213622][   T70] br0: port 1(dummy0) entered disabled state