[ 1859.297403][T22019] br0: port 1(dummy0) entered blocking state
[ 1859.297585][T22019] br0: port 1(dummy0) entered disabled state
[ 1859.297755][T22019] dummy0: entered allmulticast mode
[ 1859.298605][T22019] dummy0: entered promiscuous mode
[ 1859.332291][T22020] br0: port 1(dummy0) entered blocking state
[ 1859.332486][T22020] br0: port 1(dummy0) entered forwarding state
[ 1861.271320][   T12] dummy0: left allmulticast mode
[ 1861.271499][   T12] dummy0: left promiscuous mode
[ 1861.273732][   T12] br0: port 1(dummy0) entered disabled state