[ 1777.194489] br0: port 1(dummy0) entered blocking state
[ 1777.194528] br0: port 1(dummy0) entered disabled state
[ 1777.194564] dummy0: entered allmulticast mode
[ 1777.194614] dummy0: entered promiscuous mode
[ 1777.197379] br0: port 1(dummy0) entered blocking state
[ 1777.197410] br0: port 1(dummy0) entered forwarding state
[ 1777.377266] dummy0: left allmulticast mode
[ 1777.377298] dummy0: left promiscuous mode
[ 1777.377329] br0: port 1(dummy0) entered disabled state