[ 2441.816214] br0: port 1(dummy0) entered disabled state
[ 2441.873006] br0: port 1(dummy0) entered listening state
[ 2442.996282] br0: port 1(dummy0) entered learning state
[ 2443.055727] br0: port 1(dummy0) entered forwarding state
[ 2443.115695] br0: port 1(dummy0) entered forwarding state
[ 2458.281758] br0: port 1(dummy0) entered disabled state
[ 2458.299418] br0: port 1(dummy0) entered blocking state
[ 2458.299424] br0: port 1(dummy0) entered listening state
[ 2478.858509] br0: port 1(dummy0) entered learning state
[ 2499.338507] br0: port 1(dummy0) entered forwarding state
[ 2499.338533] br0: topology change detected, propagating
[ 2518.616424] br0: port 1(dummy0) entered disabled state
[ 2518.642444] device dummy0 left promiscuous mode
[ 2518.642493] br0: port 1(dummy0) entered disabled state