[  514.035904] bond0: (slave eth0): making interface the new active one
[  514.035983] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.231101] bond0: (slave eth0): Releasing backup interface
[  518.344820] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.515985] bond0: (slave eth0): Releasing backup interface