[  517.442167] bond0: (slave eth0): making interface the new active one
[  517.442247] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.691350] bond0: (slave eth0): Releasing backup interface
[  521.818418] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.042017] bond0: (slave eth0): Releasing backup interface
[  526.066922] bond0 (unregistering): Released all slaves