[  516.063920] bond0: (slave eth0): making interface the new active one
[  516.063987] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.277612] bond0: (slave eth0): Releasing backup interface
[  520.384170] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.567819] bond0: (slave eth0): Releasing backup interface
[  524.601773] bond0 (unregistering): Released all slaves