[ 2546.928969] br0: port 1(dummy0) entered disabled state
[ 2546.993502] br0: port 1(dummy0) entered listening state
[ 2548.142211] br0: port 1(dummy0) entered learning state
[ 2548.241478] br0: port 1(dummy0) entered forwarding state
[ 2548.311523] br0: port 1(dummy0) entered forwarding state
[ 2563.508893] br0: port 1(dummy0) entered disabled state
[ 2563.543801] br0: port 1(dummy0) entered blocking state
[ 2563.543808] br0: port 1(dummy0) entered listening state
[ 2583.630357] br0: port 1(dummy0) entered learning state
[ 2604.110415] br0: port 1(dummy0) entered forwarding state
[ 2604.110430] br0: topology change detected, propagating
[ 2623.901988] br0: port 1(dummy0) entered disabled state
[ 2623.928802] device dummy0 left promiscuous mode
[ 2623.928855] br0: port 1(dummy0) entered disabled state