[ 2226.291907][T21102] br0: port 1(dummy0) entered blocking state
[ 2226.292276][T21102] br0: port 1(dummy0) entered disabled state
[ 2226.292651][T21102] dummy0: entered allmulticast mode
[ 2226.293719][T21102] dummy0: entered promiscuous mode
[ 2226.326748][T21103] br0: port 1(dummy0) entered blocking state
[ 2226.327071][T21103] br0: port 1(dummy0) entered forwarding state
[ 2228.816919][   T12] dummy0: left allmulticast mode
[ 2228.817950][   T12] dummy0: left promiscuous mode
[ 2228.818332][   T12] br0: port 1(dummy0) entered disabled state