[ 3504.697631] br0: port 1(dummy0) entered disabled state
[ 3504.838734] br0: port 1(dummy0) entered listening state
[ 3506.148232] br0: port 1(dummy0) entered learning state
[ 3506.289932] br0: port 1(dummy0) entered forwarding state
[ 3506.437065] br0: port 1(dummy0) entered forwarding state
[ 3521.817327] br0: port 1(dummy0) entered disabled state
[ 3521.869623] br0: port 1(dummy0) entered blocking state
[ 3521.869643] br0: port 1(dummy0) entered listening state
[ 3542.456801] br0: port 1(dummy0) entered learning state
[ 3562.937369] br0: port 1(dummy0) entered forwarding state
[ 3562.937388] br0: topology change detected, propagating
[ 3582.546753] br0: port 1(dummy0) entered disabled state
[ 3582.599041] device dummy0 left promiscuous mode
[ 3582.599081] br0: port 1(dummy0) entered disabled state