[  522.395666] bond0: (slave eth0): making interface the new active one
[  522.395757] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.605082] bond0: (slave eth0): Releasing backup interface
[  526.686281] bond0: (slave eth0): Enslaving as an active interface with an up link
[  530.835502] bond0: (slave eth0): Releasing backup interface
[  530.865484] bond0 (unregistering): Released all slaves