[ 1621.819316] br0: port 1(dummy0) entered blocking state
[ 1621.819388] br0: port 1(dummy0) entered disabled state
[ 1621.819457] dummy0: entered allmulticast mode
[ 1621.819540] dummy0: entered promiscuous mode
[ 1621.822376] br0: port 1(dummy0) entered blocking state
[ 1621.822408] br0: port 1(dummy0) entered forwarding state
[ 1622.010963] dummy0: left allmulticast mode
[ 1622.011020] dummy0: left promiscuous mode
[ 1622.011055] br0: port 1(dummy0) entered disabled state