[  514.999249] bond0: (slave eth0): making interface the new active one
[  514.999334] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.260102] bond0: (slave eth0): Releasing backup interface
[  519.371487] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.552068] bond0: (slave eth0): Releasing backup interface
[  523.590952] bond0 (unregistering): Released all slaves