[  520.083001] bond0: (slave eth0): making interface the new active one
[  520.083097] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.235033] bond0: (slave eth0): Releasing backup interface
[  524.309214] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.464858] bond0: (slave eth0): Releasing backup interface
[  528.497861] bond0 (unregistering): Released all slaves