[  515.254338] bond0: (slave eth0): making interface the new active one
[  515.254433] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.445147] bond0: (slave eth0): Releasing backup interface
[  519.529190] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.671223] bond0: (slave eth0): Releasing backup interface
[  523.713293] bond0 (unregistering): Released all slaves