[ 1752.887282] br0: port 1(dummy0) entered blocking state
[ 1752.887324] br0: port 1(dummy0) entered disabled state
[ 1752.887358] dummy0: entered allmulticast mode
[ 1752.887412] dummy0: entered promiscuous mode
[ 1752.890960] br0: port 1(dummy0) entered blocking state
[ 1752.890990] br0: port 1(dummy0) entered forwarding state
[ 1753.142787] dummy0: left allmulticast mode
[ 1753.142818] dummy0: left promiscuous mode
[ 1753.142847] br0: port 1(dummy0) entered disabled state