[  515.656597] bond0: (slave eth0): making interface the new active one
[  515.656730] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.896439] bond0: (slave eth0): Releasing backup interface
[  519.993333] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.186969] bond0: (slave eth0): Releasing backup interface
[  524.208964] bond0 (unregistering): Released all slaves