[ 1783.030130] br0: port 1(dummy0) entered blocking state
[ 1783.030203] br0: port 1(dummy0) entered disabled state
[ 1783.030276] dummy0: entered allmulticast mode
[ 1783.030361] dummy0: entered promiscuous mode
[ 1783.033288] br0: port 1(dummy0) entered blocking state
[ 1783.033321] br0: port 1(dummy0) entered forwarding state
[ 1783.236995] dummy0: left allmulticast mode
[ 1783.237025] dummy0: left promiscuous mode
[ 1783.237057] br0: port 1(dummy0) entered disabled state