[ 2207.509438][T30743] br0: port 1(dummy0) entered blocking state
[ 2207.509668][T30743] br0: port 1(dummy0) entered disabled state
[ 2207.509882][T30743] dummy0: entered allmulticast mode
[ 2207.516421][T30743] dummy0: entered promiscuous mode
[ 2207.548277][T30744] br0: port 1(dummy0) entered blocking state
[ 2207.548490][T30744] br0: port 1(dummy0) entered forwarding state
[ 2209.451295][   T12] dummy0: left allmulticast mode
[ 2209.452253][   T12] dummy0: left promiscuous mode
[ 2209.452496][   T12] br0: port 1(dummy0) entered disabled state