[  517.509431] bond0: (slave eth0): making interface the new active one
[  517.509524] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.748962] bond0: (slave eth0): Releasing backup interface
[  521.860984] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.038966] bond0: (slave eth0): Releasing backup interface
[  526.073941] bond0 (unregistering): Released all slaves