[ 2149.102526][T20072] br0: port 1(dummy0) entered blocking state
[ 2149.102707][T20072] br0: port 1(dummy0) entered disabled state
[ 2149.102852][T20072] dummy0: entered allmulticast mode
[ 2149.103694][T20072] dummy0: entered promiscuous mode
[ 2149.126825][T20073] br0: port 1(dummy0) entered blocking state
[ 2149.127151][T20073] br0: port 1(dummy0) entered forwarding state
[ 2151.110475][   T12] dummy0: left allmulticast mode
[ 2151.111183][   T12] dummy0: left promiscuous mode
[ 2151.111649][   T12] br0: port 1(dummy0) entered disabled state