[  515.893058] bond0: (slave eth0): making interface the new active one
[  515.893188] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.084698] bond0: (slave eth0): Releasing backup interface
[  520.151788] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.309281] bond0: (slave eth0): Releasing backup interface
[  524.338257] bond0 (unregistering): Released all slaves