[ 1931.079020][T11537] br0: port 1(dummy0) entered blocking state
[ 1931.079214][T11537] br0: port 1(dummy0) entered disabled state
[ 1931.079385][T11537] dummy0: entered allmulticast mode
[ 1931.080854][T11537] dummy0: entered promiscuous mode
[ 1931.114258][T11538] br0: port 1(dummy0) entered blocking state
[ 1931.114560][T11538] br0: port 1(dummy0) entered forwarding state
[ 1933.010003][   T12] dummy0: left allmulticast mode
[ 1933.011031][   T12] dummy0: left promiscuous mode
[ 1933.011326][   T12] br0: port 1(dummy0) entered disabled state