[  520.696251] bond0: (slave eth0): making interface the new active one
[  520.696424] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.877289] bond0: (slave eth0): Releasing backup interface
[  524.941250] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.106599] bond0: (slave eth0): Releasing backup interface
[  529.140632] bond0 (unregistering): Released all slaves