[  520.570213] bond0: (slave eth0): making interface the new active one
[  520.570284] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.753095] bond0: (slave eth0): Releasing backup interface
[  524.831428] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.974770] bond0: (slave eth0): Releasing backup interface
[  529.005795] bond0 (unregistering): Released all slaves