[  512.284385] bond0: (slave eth0): making interface the new active one
[  512.284498] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.436779] bond0: (slave eth0): Releasing backup interface
[  516.502200] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.666259] bond0: (slave eth0): Releasing backup interface
[  520.708175] bond0 (unregistering): Released all slaves