[  520.443389] bond0: (slave eth0): making interface the new active one
[  520.443457] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.621209] bond0: (slave eth0): Releasing backup interface
[  524.689983] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.850623] bond0: (slave eth0): Releasing backup interface
[  528.880520] bond0 (unregistering): Released all slaves