[ 2228.593096][T23310] br0: port 1(dummy0) entered blocking state
[ 2228.593402][T23310] br0: port 1(dummy0) entered disabled state
[ 2228.593693][T23310] dummy0: entered allmulticast mode
[ 2228.594858][T23310] dummy0: entered promiscuous mode
[ 2228.628066][T23311] br0: port 1(dummy0) entered blocking state
[ 2228.628615][T23311] br0: port 1(dummy0) entered forwarding state
[ 2231.119252][   T12] dummy0: left allmulticast mode
[ 2231.120575][   T12] dummy0: left promiscuous mode
[ 2231.121105][   T12] br0: port 1(dummy0) entered disabled state