[ 2519.229109] br0: port 1(dummy0) entered disabled state
[ 2519.287703] br0: port 1(dummy0) entered listening state
[ 2520.399928] br0: port 1(dummy0) entered learning state
[ 2520.458382] br0: port 1(dummy0) entered forwarding state
[ 2520.520272] br0: port 1(dummy0) entered forwarding state
[ 2535.673475] br0: port 1(dummy0) entered disabled state
[ 2535.696760] br0: port 1(dummy0) entered blocking state
[ 2535.696766] br0: port 1(dummy0) entered listening state
[ 2555.736733] br0: port 1(dummy0) entered learning state
[ 2576.216811] br0: port 1(dummy0) entered forwarding state
[ 2576.216837] br0: topology change detected, propagating
[ 2595.980040] br0: port 1(dummy0) entered disabled state
[ 2596.006210] device dummy0 left promiscuous mode
[ 2596.006241] br0: port 1(dummy0) entered disabled state