[ 1711.633047] br0: port 1(dummy0) entered blocking state
[ 1711.633083] br0: port 1(dummy0) entered disabled state
[ 1711.633120] dummy0: entered allmulticast mode
[ 1711.633169] dummy0: entered promiscuous mode
[ 1711.636373] br0: port 1(dummy0) entered blocking state
[ 1711.636405] br0: port 1(dummy0) entered forwarding state
[ 1711.857137] dummy0: left allmulticast mode
[ 1711.857171] dummy0: left promiscuous mode
[ 1711.857201] br0: port 1(dummy0) entered disabled state