[ 1602.206166] br0: port 1(dummy0) entered blocking state
[ 1602.206226] br0: port 1(dummy0) entered disabled state
[ 1602.206279] dummy0: entered allmulticast mode
[ 1602.206348] dummy0: entered promiscuous mode
[ 1602.209224] br0: port 1(dummy0) entered blocking state
[ 1602.209244] br0: port 1(dummy0) entered forwarding state
[ 1602.412296] dummy0: left allmulticast mode
[ 1602.412321] dummy0: left promiscuous mode
[ 1602.412339] br0: port 1(dummy0) entered disabled state