[  512.809941] bond0: (slave eth0): making interface the new active one
[  512.810021] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.013947] bond0: (slave eth0): Releasing backup interface
[  517.124034] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.301115] bond0: (slave eth0): Releasing backup interface
[  521.326093] bond0 (unregistering): Released all slaves