[ 2245.665255][T12014] br0: port 1(dummy0) entered blocking state
[ 2245.665468][T12014] br0: port 1(dummy0) entered disabled state
[ 2245.665637][T12014] dummy0: entered allmulticast mode
[ 2245.666547][T12014] dummy0: entered promiscuous mode
[ 2245.692433][T12015] br0: port 1(dummy0) entered blocking state
[ 2245.692853][T12015] br0: port 1(dummy0) entered forwarding state
[ 2248.120962][   T12] dummy0: left allmulticast mode
[ 2248.122179][   T12] dummy0: left promiscuous mode
[ 2248.122488][   T12] br0: port 1(dummy0) entered disabled state