[  517.511061] bond0: (slave eth0): making interface the new active one
[  517.511180] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.684865] bond0: (slave eth0): Releasing backup interface
[  521.753483] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.911523] bond0: (slave eth0): Releasing backup interface
[  525.941389] bond0 (unregistering): Released all slaves