[ 2073.348278][T22317] br0: port 1(dummy0) entered blocking state
[ 2073.348478][T22317] br0: port 1(dummy0) entered disabled state
[ 2073.348636][T22317] dummy0: entered allmulticast mode
[ 2073.349591][T22317] dummy0: entered promiscuous mode
[ 2073.378674][T22318] br0: port 1(dummy0) entered blocking state
[ 2073.379036][T22318] br0: port 1(dummy0) entered forwarding state
[ 2075.328526][   T12] dummy0: left allmulticast mode
[ 2075.329513][   T12] dummy0: left promiscuous mode
[ 2075.329819][   T12] br0: port 1(dummy0) entered disabled state