[  515.985087] bond0: (slave eth0): making interface the new active one
[  515.985163] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.217489] bond0: (slave eth0): Releasing backup interface
[  520.311770] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.511041] bond0: (slave eth0): Releasing backup interface
[  524.543945] bond0 (unregistering): Released all slaves