[  512.464847] bond0: (slave eth0): making interface the new active one
[  512.464937] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.702151] bond0: (slave eth0): Releasing backup interface
[  516.803332] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.981100] bond0: (slave eth0): Releasing backup interface
[  521.015053] bond0 (unregistering): Released all slaves