[ 1696.154920] br0: port 1(dummy0) entered blocking state
[ 1696.154969] br0: port 1(dummy0) entered disabled state
[ 1696.155010] dummy0: entered allmulticast mode
[ 1696.155083] dummy0: entered promiscuous mode
[ 1696.157891] br0: port 1(dummy0) entered blocking state
[ 1696.157935] br0: port 1(dummy0) entered forwarding state
[ 1696.339175] dummy0: left allmulticast mode
[ 1696.339249] dummy0: left promiscuous mode
[ 1696.339321] br0: port 1(dummy0) entered disabled state