[  504.055044] bond0: (slave eth0): making interface the new active one
[  504.055126] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.261992] bond0: (slave eth0): Releasing backup interface
[  508.353521] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.543768] bond0: (slave eth0): Releasing backup interface
[  512.577699] bond0 (unregistering): Released all slaves