[  514.828927] bond0: (slave eth0): making interface the new active one
[  514.829006] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.076663] bond0: (slave eth0): Releasing backup interface
[  519.185001] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.365711] bond0: (slave eth0): Releasing backup interface
[  523.396699] bond0 (unregistering): Released all slaves