[  516.449426] bond0: (slave eth0): making interface the new active one
[  516.449517] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.671601] bond0: (slave eth0): Releasing backup interface
[  520.793952] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.946958] bond0: (slave eth0): Releasing backup interface
[  524.977884] bond0 (unregistering): Released all slaves