[ 1806.498552] br0: port 1(dummy0) entered blocking state
[ 1806.498594] br0: port 1(dummy0) entered disabled state
[ 1806.498638] dummy0: entered allmulticast mode
[ 1806.498693] dummy0: entered promiscuous mode
[ 1806.502136] br0: port 1(dummy0) entered blocking state
[ 1806.502202] br0: port 1(dummy0) entered forwarding state
[ 1806.721651] dummy0: left allmulticast mode
[ 1806.721682] dummy0: left promiscuous mode
[ 1806.721715] br0: port 1(dummy0) entered disabled state