[  515.578164] bond0: (slave eth0): making interface the new active one
[  515.578229] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.779149] bond0: (slave eth0): Releasing backup interface
[  519.888411] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.058048] bond0: (slave eth0): Releasing backup interface
[  524.084991] bond0 (unregistering): Released all slaves