[  520.413577] bond0: (slave eth0): making interface the new active one
[  520.413662] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.618407] bond0: (slave eth0): Releasing backup interface
[  524.695274] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.840565] bond0: (slave eth0): Releasing backup interface
[  528.876501] bond0 (unregistering): Released all slaves