[  512.798882] bond0: (slave eth0): making interface the new active one
[  512.798972] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.015239] bond0: (slave eth0): Releasing backup interface
[  517.108645] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.302971] bond0: (slave eth0): Releasing backup interface
[  521.335822] bond0 (unregistering): Released all slaves