[ 1915.622399][T12945] br0: port 1(dummy0) entered blocking state
[ 1915.622600][T12945] br0: port 1(dummy0) entered disabled state
[ 1915.622785][T12945] dummy0: entered allmulticast mode
[ 1915.623799][T12945] dummy0: entered promiscuous mode
[ 1915.650239][T12946] br0: port 1(dummy0) entered blocking state
[ 1915.650557][T12946] br0: port 1(dummy0) entered forwarding state
[ 1917.407687][   T12] dummy0: left allmulticast mode
[ 1917.407994][   T12] dummy0: left promiscuous mode
[ 1917.408209][   T12] br0: port 1(dummy0) entered disabled state