[ 1741.663971] br0: port 1(dummy0) entered blocking state
[ 1741.664003] br0: port 1(dummy0) entered disabled state
[ 1741.664026] dummy0: entered allmulticast mode
[ 1741.664066] dummy0: entered promiscuous mode
[ 1741.666754] br0: port 1(dummy0) entered blocking state
[ 1741.666804] br0: port 1(dummy0) entered forwarding state
[ 1741.854440] dummy0: left allmulticast mode
[ 1741.854469] dummy0: left promiscuous mode
[ 1741.854488] br0: port 1(dummy0) entered disabled state