[  504.535759] bond0: (slave eth0): making interface the new active one
[  504.535848] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.692934] bond0: (slave eth0): Releasing backup interface
[  508.776650] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.981318] bond0: (slave eth0): Releasing backup interface
[  512.999098] bond0 (unregistering): Released all slaves