[  516.650050] bond0: (slave eth0): making interface the new active one
[  516.650156] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.849939] bond0: (slave eth0): Releasing backup interface
[  520.923741] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.068128] bond0: (slave eth0): Releasing backup interface
[  525.093107] bond0 (unregistering): Released all slaves