[ 1641.425154] br0: port 1(dummy0) entered blocking state
[ 1641.425224] br0: port 1(dummy0) entered disabled state
[ 1641.425295] dummy0: entered allmulticast mode
[ 1641.425362] dummy0: entered promiscuous mode
[ 1641.428458] br0: port 1(dummy0) entered blocking state
[ 1641.428503] br0: port 1(dummy0) entered forwarding state
[ 1641.628144] dummy0: left allmulticast mode
[ 1641.628229] dummy0: left promiscuous mode
[ 1641.628301] br0: port 1(dummy0) entered disabled state