[  515.485549] bond0: (slave eth0): making interface the new active one
[  515.485651] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.692402] bond0: (slave eth0): Releasing backup interface
[  519.763229] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.923165] bond0: (slave eth0): Releasing backup interface
[  523.957073] bond0 (unregistering): Released all slaves