[  515.079096] bond0: (slave eth0): making interface the new active one
[  515.079182] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.320215] bond0: (slave eth0): Releasing backup interface
[  519.424459] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.609952] bond0: (slave eth0): Releasing backup interface
[  523.644861] bond0 (unregistering): Released all slaves