[  512.270445] bond0: (slave eth0): making interface the new active one
[  512.270526] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.501225] bond0: (slave eth0): Releasing backup interface
[  516.612571] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.787021] bond0: (slave eth0): Releasing backup interface
[  520.813992] bond0 (unregistering): Released all slaves