[  508.218820] bond0: (slave eth0): making interface the new active one
[  508.218902] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.408697] bond0: (slave eth0): Releasing backup interface
[  512.489060] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.637583] bond0: (slave eth0): Releasing backup interface
[  516.664270] bond0 (unregistering): Released all slaves