[  521.685613] bond0: (slave eth0): making interface the new active one
[  521.685681] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.839806] bond0: (slave eth0): Releasing backup interface
[  525.913742] bond0: (slave eth0): Enslaving as an active interface with an up link
[  530.065587] bond0: (slave eth0): Releasing backup interface
[  530.097559] bond0 (unregistering): Released all slaves