[ 2096.830600][  T620] br0: port 1(dummy0) entered blocking state
[ 2096.830943][  T620] br0: port 1(dummy0) entered disabled state
[ 2096.831288][  T620] dummy0: entered allmulticast mode
[ 2096.832431][  T620] dummy0: entered promiscuous mode
[ 2096.860053][  T621] br0: port 1(dummy0) entered blocking state
[ 2096.860609][  T621] br0: port 1(dummy0) entered forwarding state
[ 2099.358627][   T12] dummy0: left allmulticast mode
[ 2099.359869][   T12] dummy0: left promiscuous mode
[ 2099.360257][   T12] br0: port 1(dummy0) entered disabled state