[ 2021.389994][T27772] br0: port 1(dummy0) entered blocking state
[ 2021.390199][T27772] br0: port 1(dummy0) entered disabled state
[ 2021.390392][T27772] dummy0: entered allmulticast mode
[ 2021.391279][T27772] dummy0: entered promiscuous mode
[ 2021.432930][T27773] br0: port 1(dummy0) entered blocking state
[ 2021.433123][T27773] br0: port 1(dummy0) entered forwarding state
[ 2023.979919][   T12] dummy0: left allmulticast mode
[ 2023.980133][   T12] dummy0: left promiscuous mode
[ 2023.980453][   T12] br0: port 1(dummy0) entered disabled state