[  521.626457] bond0: (slave eth0): making interface the new active one
[  521.626530] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.853585] bond0: (slave eth0): Releasing backup interface
[  525.970584] bond0: (slave eth0): Enslaving as an active interface with an up link
[  530.139003] bond0: (slave eth0): Releasing backup interface
[  530.182999] bond0 (unregistering): Released all slaves