[  504.076412] bond0: (slave eth0): making interface the new active one
[  504.076502] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.243885] bond0: (slave eth0): Releasing backup interface
[  508.338346] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.543409] bond0: (slave eth0): Releasing backup interface
[  512.585620] bond0 (unregistering): Released all slaves