[  516.190942] bond0: (slave eth0): making interface the new active one
[  516.191028] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.412370] bond0: (slave eth0): Releasing backup interface
[  520.523990] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.701046] bond0: (slave eth0): Releasing backup interface
[  524.725940] bond0 (unregistering): Released all slaves