[  514.874241] bond0: (slave eth0): making interface the new active one
[  514.874305] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.064010] bond0: (slave eth0): Releasing backup interface
[  519.144777] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.352013] bond0: (slave eth0): Releasing backup interface
[  523.377906] bond0 (unregistering): Released all slaves