[  519.291775] bond0: (slave eth0): making interface the new active one
[  519.291886] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.474742] bond0: (slave eth0): Releasing backup interface
[  523.547804] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.704408] bond0: (slave eth0): Releasing backup interface
[  527.739353] bond0 (unregistering): Released all slaves