[  515.447035] bond0: (slave eth0): making interface the new active one
[  515.447121] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.705684] bond0: (slave eth0): Releasing backup interface
[  519.815422] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.987033] bond0: (slave eth0): Releasing backup interface
[  524.011982] bond0 (unregistering): Released all slaves