[ 2152.572200][T21165] br0: port 1(dummy0) entered blocking state
[ 2152.572529][T21165] br0: port 1(dummy0) entered disabled state
[ 2152.572825][T21165] dummy0: entered allmulticast mode
[ 2152.574562][T21165] dummy0: entered promiscuous mode
[ 2152.600692][T21166] br0: port 1(dummy0) entered blocking state
[ 2152.601312][T21166] br0: port 1(dummy0) entered forwarding state
[ 2155.127790][   T12] dummy0: left allmulticast mode
[ 2155.128247][   T12] dummy0: left promiscuous mode
[ 2155.128590][   T12] br0: port 1(dummy0) entered disabled state