[ 2022.800024] br0: port 1(dummy0) entered blocking state
[ 2022.800062] br0: port 1(dummy0) entered disabled state
[ 2022.800106] dummy0: entered allmulticast mode
[ 2022.800156] dummy0: entered promiscuous mode
[ 2022.803603] br0: port 1(dummy0) entered blocking state
[ 2022.803663] br0: port 1(dummy0) entered forwarding state
[ 2023.065044] dummy0: left allmulticast mode
[ 2023.065076] dummy0: left promiscuous mode
[ 2023.065108] br0: port 1(dummy0) entered disabled state