[  504.150478] bond0: (slave eth0): making interface the new active one
[  504.150559] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.364070] bond0: (slave eth0): Releasing backup interface
[  508.449953] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.590016] bond0: (slave eth0): Releasing backup interface
[  512.624325] bond0 (unregistering): Released all slaves