[  515.453664] bond0: (slave eth0): making interface the new active one
[  515.453781] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.627825] bond0: (slave eth0): Releasing backup interface
[  519.692856] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.856491] bond0: (slave eth0): Releasing backup interface
[  523.891300] bond0 (unregistering): Released all slaves