[ 2130.239754][ T9857] br0: port 1(dummy0) entered blocking state
[ 2130.240044][ T9857] br0: port 1(dummy0) entered disabled state
[ 2130.240308][ T9857] dummy0: entered allmulticast mode
[ 2130.241869][ T9857] dummy0: entered promiscuous mode
[ 2130.267964][ T9858] br0: port 1(dummy0) entered blocking state
[ 2130.268351][ T9858] br0: port 1(dummy0) entered forwarding state
[ 2132.746766][   T12] dummy0: left allmulticast mode
[ 2132.747802][   T12] dummy0: left promiscuous mode
[ 2132.748163][   T12] br0: port 1(dummy0) entered disabled state