[ 3640.379208] br0: port 1(dummy0) entered disabled state
[ 3640.537365] br0: port 1(dummy0) entered listening state
[ 3641.880436] br0: port 1(dummy0) entered learning state
[ 3642.038242] br0: port 1(dummy0) entered forwarding state
[ 3642.195955] br0: port 1(dummy0) entered forwarding state
[ 3657.609578] br0: port 1(dummy0) entered disabled state
[ 3657.668858] br0: port 1(dummy0) entered blocking state
[ 3657.668877] br0: port 1(dummy0) entered listening state
[ 3678.302823] br0: port 1(dummy0) entered learning state
[ 3698.784077] br0: port 1(dummy0) entered forwarding state
[ 3698.784103] br0: topology change detected, propagating
[ 3718.422353] br0: port 1(dummy0) entered disabled state
[ 3718.483120] device dummy0 left promiscuous mode
[ 3718.483171] br0: port 1(dummy0) entered disabled state