[ 1645.115697] br0: port 1(dummy0) entered blocking state
[ 1645.115779] br0: port 1(dummy0) entered disabled state
[ 1645.115853] dummy0: entered allmulticast mode
[ 1645.115938] dummy0: entered promiscuous mode
[ 1645.118713] br0: port 1(dummy0) entered blocking state
[ 1645.118745] br0: port 1(dummy0) entered forwarding state
[ 1645.310324] dummy0: left allmulticast mode
[ 1645.310359] dummy0: left promiscuous mode
[ 1645.310421] br0: port 1(dummy0) entered disabled state