[  510.982037] bond0: (slave eth0): making interface the new active one
[  510.982119] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.228773] bond0: (slave eth0): Releasing backup interface
[  515.349852] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.572822] bond0: (slave eth0): Releasing backup interface
[  519.605729] bond0 (unregistering): Released all slaves