[  520.301898] bond0: (slave eth0): making interface the new active one
[  520.301981] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.494471] bond0: (slave eth0): Releasing backup interface
[  524.563311] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.716289] bond0: (slave eth0): Releasing backup interface
[  528.753226] bond0 (unregistering): Released all slaves