[  513.157490] bond0: (slave eth0): making interface the new active one
[  513.157560] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.400651] bond0: (slave eth0): Releasing backup interface
[  517.508892] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.686042] bond0: (slave eth0): Releasing backup interface
[  521.717967] bond0 (unregistering): Released all slaves