[  515.489168] bond0: (slave eth0): making interface the new active one
[  515.489254] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.707914] bond0: (slave eth0): Releasing backup interface
[  519.831632] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.996962] bond0: (slave eth0): Releasing backup interface
[  524.043976] bond0 (unregistering): Released all slaves