[ 1841.453502][T10331] br0: port 1(dummy0) entered blocking state
[ 1841.453743][T10331] br0: port 1(dummy0) entered disabled state
[ 1841.453958][T10331] dummy0: entered allmulticast mode
[ 1841.454894][T10331] dummy0: entered promiscuous mode
[ 1841.477133][T10332] br0: port 1(dummy0) entered blocking state
[ 1841.477309][T10332] br0: port 1(dummy0) entered forwarding state
[ 1843.464802][   T12] dummy0: left allmulticast mode
[ 1843.465004][   T12] dummy0: left promiscuous mode
[ 1843.465262][   T12] br0: port 1(dummy0) entered disabled state