[  517.479555] bond0: (slave eth0): making interface the new active one
[  517.479654] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.695686] bond0: (slave eth0): Releasing backup interface
[  521.808666] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.978268] bond0: (slave eth0): Releasing backup interface
[  526.018284] bond0 (unregistering): Released all slaves