[ 1561.078414] br0: port 1(dummy0) entered blocking state
[ 1561.078449] br0: port 1(dummy0) entered disabled state
[ 1561.078478] dummy0: entered allmulticast mode
[ 1561.078520] dummy0: entered promiscuous mode
[ 1561.080875] br0: port 1(dummy0) entered blocking state
[ 1561.080903] br0: port 1(dummy0) entered forwarding state
[ 1561.256185] dummy0: left allmulticast mode
[ 1561.256246] dummy0: left promiscuous mode
[ 1561.256308] br0: port 1(dummy0) entered disabled state