[  538.326733] bond0: (slave eth0): making interface the new active one
[  538.326806] bond0: (slave eth0): Enslaving as an active interface with an up link
[  542.549331] bond0: (slave eth0): Releasing backup interface
[  542.625549] bond0: (slave eth0): Enslaving as an active interface with an up link
[  546.772040] bond0: (slave eth0): Releasing backup interface
[  546.789956] bond0 (unregistering): Released all slaves