[  512.961917] bond0: (slave eth0): making interface the new active one
[  512.961987] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.144376] bond0: (slave eth0): Releasing backup interface
[  517.231985] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.435353] bond0: (slave eth0): Releasing backup interface
[  521.474977] bond0 (unregistering): Released all slaves