[ 2018.198338][T10710] br0: port 1(dummy0) entered blocking state
[ 2018.198527][T10710] br0: port 1(dummy0) entered disabled state
[ 2018.198695][T10710] dummy0: entered allmulticast mode
[ 2018.199655][T10710] dummy0: entered promiscuous mode
[ 2018.226524][T10711] br0: port 1(dummy0) entered blocking state
[ 2018.227059][T10711] br0: port 1(dummy0) entered forwarding state
[ 2020.120791][   T69] dummy0: left allmulticast mode
[ 2020.121472][   T69] dummy0: left promiscuous mode
[ 2020.121961][   T69] br0: port 1(dummy0) entered disabled state