[  503.537518] bond0: (slave eth0): making interface the new active one
[  503.537638] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.733352] bond0: (slave eth0): Releasing backup interface
[  507.817523] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.021601] bond0: (slave eth0): Releasing backup interface
[  512.049418] bond0 (unregistering): Released all slaves