[  512.449298] bond0: (slave eth0): making interface the new active one
[  512.449416] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.792668] bond0: (slave eth0): Releasing backup interface
[  517.052012] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.308919] bond0: (slave eth0): Releasing backup interface
[  521.348752] bond0 (unregistering): Released all slaves