[  515.550435] bond0: (slave eth0): making interface the new active one
[  515.550504] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.689018] bond0: (slave eth0): Releasing backup interface
[  519.756428] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.912553] bond0: (slave eth0): Releasing backup interface
[  523.939455] bond0 (unregistering): Released all slaves