[ 2019.516771][ T2832] br0: port 1(dummy0) entered blocking state
[ 2019.517000][ T2832] br0: port 1(dummy0) entered disabled state
[ 2019.517211][ T2832] dummy0: entered allmulticast mode
[ 2019.518247][ T2832] dummy0: entered promiscuous mode
[ 2019.552040][ T2833] br0: port 1(dummy0) entered blocking state
[ 2019.552281][ T2833] br0: port 1(dummy0) entered forwarding state
[ 2021.421589][   T69] dummy0: left allmulticast mode
[ 2021.422351][   T69] dummy0: left promiscuous mode
[ 2021.422653][   T69] br0: port 1(dummy0) entered disabled state