[  515.192562] bond0: (slave eth0): making interface the new active one
[  515.192651] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.449349] bond0: (slave eth0): Releasing backup interface
[  519.547636] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.744891] bond0: (slave eth0): Releasing backup interface
[  523.780980] bond0 (unregistering): Released all slaves