[ 1583.446420] br0: port 1(dummy0) entered blocking state
[ 1583.446465] br0: port 1(dummy0) entered disabled state
[ 1583.446496] dummy0: entered allmulticast mode
[ 1583.446552] dummy0: entered promiscuous mode
[ 1583.449330] br0: port 1(dummy0) entered blocking state
[ 1583.449394] br0: port 1(dummy0) entered forwarding state
[ 1583.632724] dummy0: left allmulticast mode
[ 1583.632764] dummy0: left promiscuous mode
[ 1583.632792] br0: port 1(dummy0) entered disabled state