[  514.516509] bond0: (slave eth0): making interface the new active one
[  514.516577] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.746536] bond0: (slave eth0): Releasing backup interface
[  518.857829] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.039913] bond0: (slave eth0): Releasing backup interface
[  523.066866] bond0 (unregistering): Released all slaves