[  520.484508] bond0: (slave eth0): making interface the new active one
[  520.484616] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.694723] bond0: (slave eth0): Releasing backup interface
[  524.785048] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.982613] bond0: (slave eth0): Releasing backup interface
[  529.018454] bond0 (unregistering): Released all slaves