[ 2215.633712] br0: port 1(dummy0) entered disabled state
[ 2215.757479] br0: port 1(dummy0) entered listening state
[ 2217.021682] br0: port 1(dummy0) entered learning state
[ 2217.180815] br0: port 1(dummy0) entered forwarding state
[ 2217.328673] br0: port 1(dummy0) entered forwarding state
[ 2232.732195] br0: port 1(dummy0) entered disabled state
[ 2232.783227] br0: port 1(dummy0) entered blocking state
[ 2232.788373] br0: port 1(dummy0) entered listening state
[ 2252.964917] br0: port 1(dummy0) entered learning state
[ 2273.445014] br0: port 1(dummy0) entered forwarding state
[ 2273.450336] br0: topology change detected, propagating
[ 2293.483405] br0: port 1(dummy0) entered disabled state
[ 2293.532417] device dummy0 left promiscuous mode
[ 2293.537031] br0: port 1(dummy0) entered disabled state