[  503.416604] bond0: (slave eth0): making interface the new active one
[  503.416677] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.603773] bond0: (slave eth0): Releasing backup interface
[  507.685091] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.829567] bond0: (slave eth0): Releasing backup interface
[  511.866474] bond0 (unregistering): Released all slaves