[  519.318359] bond0: (slave eth0): making interface the new active one
[  519.318472] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.537831] bond0: (slave eth0): Releasing backup interface
[  523.609283] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.765418] bond0: (slave eth0): Releasing backup interface
[  527.805350] bond0 (unregistering): Released all slaves