[ 2148.051151][T10147] br0: port 1(dummy0) entered blocking state
[ 2148.051505][T10147] br0: port 1(dummy0) entered disabled state
[ 2148.051848][T10147] dummy0: entered allmulticast mode
[ 2148.053542][T10147] dummy0: entered promiscuous mode
[ 2148.090470][T10148] br0: port 1(dummy0) entered blocking state
[ 2148.091372][T10148] br0: port 1(dummy0) entered forwarding state
[ 2150.618542][   T12] dummy0: left allmulticast mode
[ 2150.619593][   T12] dummy0: left promiscuous mode
[ 2150.619924][   T12] br0: port 1(dummy0) entered disabled state