[ 1835.168323] br0: port 1(dummy0) entered blocking state
[ 1835.168366] br0: port 1(dummy0) entered disabled state
[ 1835.168404] dummy0: entered allmulticast mode
[ 1835.168465] dummy0: entered promiscuous mode
[ 1835.172131] br0: port 1(dummy0) entered blocking state
[ 1835.172164] br0: port 1(dummy0) entered forwarding state
[ 1835.447211] dummy0: left allmulticast mode
[ 1835.447257] dummy0: left promiscuous mode
[ 1835.447312] br0: port 1(dummy0) entered disabled state