[  504.256714] bond0: (slave eth0): making interface the new active one
[  504.256808] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.426919] bond0: (slave eth0): Releasing backup interface
[  508.502093] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.655745] bond0: (slave eth0): Releasing backup interface
[  512.681707] bond0 (unregistering): Released all slaves