[  505.135898] bond0: (slave eth0): making interface the new active one
[  505.136001] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.334393] bond0: (slave eth0): Releasing backup interface
[  509.424111] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.621587] bond0: (slave eth0): Releasing backup interface
[  513.648489] bond0 (unregistering): Released all slaves