[  512.998441] bond0: (slave eth0): making interface the new active one
[  512.998521] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.205311] bond0: (slave eth0): Releasing backup interface
[  517.320961] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.493951] bond0: (slave eth0): Releasing backup interface
[  521.526044] bond0 (unregistering): Released all slaves