[ 1841.732302] br0: port 1(dummy0) entered blocking state
[ 1841.732392] br0: port 1(dummy0) entered disabled state
[ 1841.732469] dummy0: entered allmulticast mode
[ 1841.732569] dummy0: entered promiscuous mode
[ 1841.736294] br0: port 1(dummy0) entered blocking state
[ 1841.736332] br0: port 1(dummy0) entered forwarding state
[ 1841.997632] dummy0: left allmulticast mode
[ 1841.997703] dummy0: left promiscuous mode
[ 1841.997794] br0: port 1(dummy0) entered disabled state