[ 2171.521835][T15503] br0: port 1(dummy0) entered blocking state
[ 2171.522175][T15503] br0: port 1(dummy0) entered disabled state
[ 2171.522503][T15503] dummy0: entered allmulticast mode
[ 2171.523564][T15503] dummy0: entered promiscuous mode
[ 2171.556884][T15504] br0: port 1(dummy0) entered blocking state
[ 2171.557186][T15504] br0: port 1(dummy0) entered forwarding state
[ 2174.062553][   T64] dummy0: left allmulticast mode
[ 2174.064577][   T64] dummy0: left promiscuous mode
[ 2174.065044][   T64] br0: port 1(dummy0) entered disabled state