[  515.553173] bond0: (slave eth0): making interface the new active one
[  515.553263] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.770731] bond0: (slave eth0): Releasing backup interface
[  519.890525] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.048874] bond0: (slave eth0): Releasing backup interface
[  524.079011] bond0 (unregistering): Released all slaves