[  340.305204] br0: port 1(dummy0) entered disabled state
[  340.639125] br0: port 1(dummy0) entered listening state
[  342.159199] br0: port 1(dummy0) entered learning state
[  342.474473] br0: port 1(dummy0) entered forwarding state
[  342.788802] br0: port 1(dummy0) entered forwarding state
[  358.634365] br0: port 1(dummy0) entered disabled state
[  358.741758] br0: port 1(dummy0) entered blocking state
[  358.744288] br0: port 1(dummy0) entered listening state
[  378.773237] br0: port 1(dummy0) entered learning state
[  399.253347] br0: port 1(dummy0) entered forwarding state
[  399.254662] br0: topology change detected, propagating
[  420.206932] br0: port 1(dummy0) entered disabled state
[  420.312606] device dummy0 left promiscuous mode
[  420.338527] br0: port 1(dummy0) entered disabled state