[  517.634081] bond0: (slave eth0): making interface the new active one
[  517.634184] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.810185] bond0: (slave eth0): Releasing backup interface
[  521.868683] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.037254] bond0: (slave eth0): Releasing backup interface
[  526.063225] bond0 (unregistering): Released all slaves