[  520.986408] bond0: (slave eth0): making interface the new active one
[  520.986497] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.133936] bond0: (slave eth0): Releasing backup interface
[  525.206669] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.361459] bond0: (slave eth0): Releasing backup interface
[  529.397434] bond0 (unregistering): Released all slaves