[ 2016.964744][ T4349] br0: port 1(dummy0) entered blocking state
[ 2016.964987][ T4349] br0: port 1(dummy0) entered disabled state
[ 2016.965207][ T4349] dummy0: entered allmulticast mode
[ 2016.967112][ T4349] dummy0: entered promiscuous mode
[ 2017.001027][ T4350] br0: port 1(dummy0) entered blocking state
[ 2017.001296][ T4350] br0: port 1(dummy0) entered forwarding state
[ 2019.006453][   T69] dummy0: left allmulticast mode
[ 2019.007503][   T69] dummy0: left promiscuous mode
[ 2019.007738][   T69] br0: port 1(dummy0) entered disabled state