[  515.176717] bond0: (slave eth0): making interface the new active one
[  515.176789] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.304618] bond0: (slave eth0): Releasing backup interface
[  519.368059] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.531028] bond0: (slave eth0): Releasing backup interface
[  523.564957] bond0 (unregistering): Released all slaves