[  511.772103] bond0: (slave eth0): making interface the new active one
[  511.772195] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.996389] bond0: (slave eth0): Releasing backup interface
[  516.119683] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.350403] bond0: (slave eth0): Releasing backup interface
[  520.376791] bond0 (unregistering): Released all slaves