[ 1900.375198][T19211] br0: port 1(dummy0) entered blocking state
[ 1900.375391][T19211] br0: port 1(dummy0) entered disabled state
[ 1900.375549][T19211] dummy0: entered allmulticast mode
[ 1900.376514][T19211] dummy0: entered promiscuous mode
[ 1900.403926][T19212] br0: port 1(dummy0) entered blocking state
[ 1900.404221][T19212] br0: port 1(dummy0) entered forwarding state
[ 1902.255847][   T68] dummy0: left allmulticast mode
[ 1902.256344][   T68] dummy0: left promiscuous mode
[ 1902.256563][   T68] br0: port 1(dummy0) entered disabled state