[ 2153.367433][T21817] br0: port 1(dummy0) entered blocking state
[ 2153.367631][T21817] br0: port 1(dummy0) entered disabled state
[ 2153.367794][T21817] dummy0: entered allmulticast mode
[ 2153.368787][T21817] dummy0: entered promiscuous mode
[ 2153.403171][T21818] br0: port 1(dummy0) entered blocking state
[ 2153.403577][T21818] br0: port 1(dummy0) entered forwarding state
[ 2155.713997][   T12] dummy0: left allmulticast mode
[ 2155.715038][   T12] dummy0: left promiscuous mode
[ 2155.715334][   T12] br0: port 1(dummy0) entered disabled state