[ 2152.408162][T13723] br0: port 1(dummy0) entered blocking state
[ 2152.408447][T13723] br0: port 1(dummy0) entered disabled state
[ 2152.408718][T13723] dummy0: entered allmulticast mode
[ 2152.411456][T13723] dummy0: entered promiscuous mode
[ 2152.452746][T13724] br0: port 1(dummy0) entered blocking state
[ 2152.453396][T13724] br0: port 1(dummy0) entered forwarding state
[ 2155.015000][   T12] dummy0: left allmulticast mode
[ 2155.015640][   T12] dummy0: left promiscuous mode
[ 2155.015885][   T12] br0: port 1(dummy0) entered disabled state