[  514.908378] bond0: (slave eth0): making interface the new active one
[  514.908450] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.135517] bond0: (slave eth0): Releasing backup interface
[  519.248734] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.419271] bond0: (slave eth0): Releasing backup interface
[  523.457305] bond0 (unregistering): Released all slaves