[ 2026.142151][ T9352] br0: port 1(dummy0) entered blocking state
[ 2026.142824][ T9352] br0: port 1(dummy0) entered disabled state
[ 2026.143461][ T9352] dummy0: entered allmulticast mode
[ 2026.144580][ T9352] dummy0: entered promiscuous mode
[ 2026.165728][ T9353] br0: port 1(dummy0) entered blocking state
[ 2026.165988][ T9353] br0: port 1(dummy0) entered forwarding state
[ 2028.124910][   T12] dummy0: left allmulticast mode
[ 2028.125200][   T12] dummy0: left promiscuous mode
[ 2028.125417][   T12] br0: port 1(dummy0) entered disabled state