[  515.489576] bond0: (slave eth0): making interface the new active one
[  515.489652] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.700370] bond0: (slave eth0): Releasing backup interface
[  519.783619] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.924419] bond0: (slave eth0): Releasing backup interface
[  523.952426] bond0 (unregistering): Released all slaves