[  512.242740] bond0: (slave eth0): making interface the new active one
[  512.242827] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.439791] bond0: (slave eth0): Releasing backup interface
[  516.543671] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.730099] bond0: (slave eth0): Releasing backup interface
[  520.758734] bond0 (unregistering): Released all slaves