[ 2052.785999][T10506] br0: port 1(dummy0) entered blocking state
[ 2052.786208][T10506] br0: port 1(dummy0) entered disabled state
[ 2052.786755][T10506] dummy0: entered allmulticast mode
[ 2052.787676][T10506] dummy0: entered promiscuous mode
[ 2052.815299][T10507] br0: port 1(dummy0) entered blocking state
[ 2052.815650][T10507] br0: port 1(dummy0) entered forwarding state
[ 2054.803402][   T12] dummy0: left allmulticast mode
[ 2054.803892][   T12] dummy0: left promiscuous mode
[ 2054.804110][   T12] br0: port 1(dummy0) entered disabled state