[ 2339.174110] br0: port 1(dummy0) entered disabled state
[ 2339.283719] br0: port 1(dummy0) entered listening state
[ 2340.515558] br0: port 1(dummy0) entered learning state
[ 2340.628291] br0: port 1(dummy0) entered forwarding state
[ 2340.740439] br0: port 1(dummy0) entered forwarding state
[ 2356.040216] br0: port 1(dummy0) entered disabled state
[ 2356.078207] br0: port 1(dummy0) entered blocking state
[ 2356.078556] br0: port 1(dummy0) entered listening state
[ 2376.144334] br0: port 1(dummy0) entered learning state
[ 2396.624242] br0: port 1(dummy0) entered forwarding state
[ 2396.625028] br0: topology change detected, propagating
[ 2416.601914] br0: port 1(dummy0) entered disabled state
[ 2416.640759] device dummy0 left promiscuous mode
[ 2416.641120] br0: port 1(dummy0) entered disabled state