[  517.524987] bond0: (slave eth0): making interface the new active one
[  517.525066] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.762182] bond0: (slave eth0): Releasing backup interface
[  521.889344] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.116139] bond0: (slave eth0): Releasing backup interface
[  526.145077] bond0 (unregistering): Released all slaves