[ 2016.230913][T28207] br0: port 1(dummy0) entered blocking state
[ 2016.231101][T28207] br0: port 1(dummy0) entered disabled state
[ 2016.231265][T28207] dummy0: entered allmulticast mode
[ 2016.232490][T28207] dummy0: entered promiscuous mode
[ 2016.259993][T28208] br0: port 1(dummy0) entered blocking state
[ 2016.260171][T28208] br0: port 1(dummy0) entered forwarding state
[ 2018.255572][   T12] dummy0: left allmulticast mode
[ 2018.256608][   T12] dummy0: left promiscuous mode
[ 2018.256844][   T12] br0: port 1(dummy0) entered disabled state