[  512.805654] bond0: (slave eth0): making interface the new active one
[  512.805744] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.016137] bond0: (slave eth0): Releasing backup interface
[  517.124992] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.299927] bond0: (slave eth0): Releasing backup interface
[  521.332859] bond0 (unregistering): Released all slaves