[ 1978.649704][T22361] br0: port 1(dummy0) entered blocking state
[ 1978.649938][T22361] br0: port 1(dummy0) entered disabled state
[ 1978.650163][T22361] dummy0: entered allmulticast mode
[ 1978.651118][T22361] dummy0: entered promiscuous mode
[ 1978.681045][T22362] br0: port 1(dummy0) entered blocking state
[ 1978.681253][T22362] br0: port 1(dummy0) entered forwarding state
[ 1980.570426][   T12] dummy0: left allmulticast mode
[ 1980.570611][   T12] dummy0: left promiscuous mode
[ 1980.570827][   T12] br0: port 1(dummy0) entered disabled state