[  515.446541] bond0: (slave eth0): making interface the new active one
[  515.446625] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.714590] bond0: (slave eth0): Releasing backup interface
[  519.826716] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.989090] bond0: (slave eth0): Releasing backup interface
[  524.026903] bond0 (unregistering): Released all slaves