[  517.105240] bond0: (slave eth0): making interface the new active one
[  517.105317] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.290675] bond0: (slave eth0): Releasing backup interface
[  521.352190] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.523023] bond0: (slave eth0): Releasing backup interface