[  504.170896] bond0: (slave eth0): making interface the new active one
[  504.171010] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.376210] bond0: (slave eth0): Releasing backup interface
[  508.464268] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.661426] bond0: (slave eth0): Releasing backup interface
[  512.691626] bond0 (unregistering): Released all slaves