[  520.032539] bond0: (slave eth0): making interface the new active one
[  520.032615] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.184539] bond0: (slave eth0): Releasing backup interface
[  524.257915] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.408577] bond0: (slave eth0): Releasing backup interface
[  528.447247] bond0 (unregistering): Released all slaves