[  508.468461] bond0: (slave eth0): making interface the new active one
[  508.468549] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.721648] bond0: (slave eth0): Releasing backup interface
[  512.823079] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.010031] bond0: (slave eth0): Releasing backup interface
[  517.032867] bond0 (unregistering): Released all slaves