[ 1921.297486][T28203] br0: port 1(dummy0) entered blocking state
[ 1921.297694][T28203] br0: port 1(dummy0) entered disabled state
[ 1921.297861][T28203] dummy0: entered allmulticast mode
[ 1921.298846][T28203] dummy0: entered promiscuous mode
[ 1921.327396][T28204] br0: port 1(dummy0) entered blocking state
[ 1921.327776][T28204] br0: port 1(dummy0) entered forwarding state
[ 1923.411117][   T12] dummy0: left allmulticast mode
[ 1923.412191][   T12] dummy0: left promiscuous mode
[ 1923.412446][   T12] br0: port 1(dummy0) entered disabled state