[ 1982.663676][T21883] br0: port 1(dummy0) entered blocking state
[ 1982.663881][T21883] br0: port 1(dummy0) entered disabled state
[ 1982.664043][T21883] dummy0: entered allmulticast mode
[ 1982.664986][T21883] dummy0: entered promiscuous mode
[ 1982.701929][T21884] br0: port 1(dummy0) entered blocking state
[ 1982.702166][T21884] br0: port 1(dummy0) entered forwarding state
[ 1984.678431][   T12] dummy0: left allmulticast mode
[ 1984.679448][   T12] dummy0: left promiscuous mode
[ 1984.679696][   T12] br0: port 1(dummy0) entered disabled state