[  504.412006] bond0: (slave eth0): making interface the new active one
[  504.412085] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.559635] bond0: (slave eth0): Releasing backup interface
[  508.635291] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.791357] bond0: (slave eth0): Releasing backup interface
[  512.833340] bond0 (unregistering): Released all slaves