[ 1805.371624] br0: port 1(dummy0) entered blocking state
[ 1805.371656] br0: port 1(dummy0) entered disabled state
[ 1805.371717] dummy0: entered allmulticast mode
[ 1805.371789] dummy0: entered promiscuous mode
[ 1805.374778] br0: port 1(dummy0) entered blocking state
[ 1805.374806] br0: port 1(dummy0) entered forwarding state
[ 1805.585289] dummy0: left allmulticast mode
[ 1805.585316] dummy0: left promiscuous mode
[ 1805.585365] br0: port 1(dummy0) entered disabled state