[ 1990.313557][T20964] br0: port 1(dummy0) entered blocking state
[ 1990.313750][T20964] br0: port 1(dummy0) entered disabled state
[ 1990.313909][T20964] dummy0: entered allmulticast mode
[ 1990.315176][T20964] dummy0: entered promiscuous mode
[ 1990.344958][T20965] br0: port 1(dummy0) entered blocking state
[ 1990.345237][T20965] br0: port 1(dummy0) entered forwarding state
[ 1992.354583][   T71] dummy0: left allmulticast mode
[ 1992.355540][   T71] dummy0: left promiscuous mode
[ 1992.355842][   T71] br0: port 1(dummy0) entered disabled state