[ 1851.384382][ T7092] br0: port 1(dummy0) entered blocking state
[ 1851.384570][ T7092] br0: port 1(dummy0) entered disabled state
[ 1851.384736][ T7092] dummy0: entered allmulticast mode
[ 1851.385799][ T7092] dummy0: entered promiscuous mode
[ 1851.414387][ T7093] br0: port 1(dummy0) entered blocking state
[ 1851.414661][ T7093] br0: port 1(dummy0) entered forwarding state
[ 1853.378697][   T12] dummy0: left allmulticast mode
[ 1853.379579][   T12] dummy0: left promiscuous mode
[ 1853.379963][   T12] br0: port 1(dummy0) entered disabled state