[ 2277.146868][T10159] br0: port 1(dummy0) entered blocking state
[ 2277.147170][T10159] br0: port 1(dummy0) entered disabled state
[ 2277.147442][T10159] dummy0: entered allmulticast mode
[ 2277.148764][T10159] dummy0: entered promiscuous mode
[ 2277.181917][T10160] br0: port 1(dummy0) entered blocking state
[ 2277.182326][T10160] br0: port 1(dummy0) entered forwarding state
[ 2279.550635][   T12] dummy0: left allmulticast mode
[ 2279.551474][   T12] dummy0: left promiscuous mode
[ 2279.551991][   T12] br0: port 1(dummy0) entered disabled state