[ 2021.965248][T19397] br0: port 1(dummy0) entered blocking state
[ 2021.965441][T19397] br0: port 1(dummy0) entered disabled state
[ 2021.965611][T19397] dummy0: entered allmulticast mode
[ 2021.966591][T19397] dummy0: entered promiscuous mode
[ 2021.989056][T19398] br0: port 1(dummy0) entered blocking state
[ 2021.989306][T19398] br0: port 1(dummy0) entered forwarding state
[ 2023.948850][   T69] dummy0: left allmulticast mode
[ 2023.949634][   T69] dummy0: left promiscuous mode
[ 2023.949877][   T69] br0: port 1(dummy0) entered disabled state