[  515.898717] bond0: (slave eth0): making interface the new active one
[  515.898817] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.087670] bond0: (slave eth0): Releasing backup interface
[  520.197316] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.377799] bond0: (slave eth0): Releasing backup interface
[  524.408773] bond0 (unregistering): Released all slaves