[  504.208801] bond0: (slave eth0): making interface the new active one
[  504.208898] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.367746] bond0: (slave eth0): Releasing backup interface
[  508.445754] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.598926] bond0: (slave eth0): Releasing backup interface
[  512.626414] bond0 (unregistering): Released all slaves