[  500.855259] bond0: (slave eth0): making interface the new active one
[  500.855354] bond0: (slave eth0): Enslaving as an active interface with an up link
[  505.027019] bond0: (slave eth0): Releasing backup interface
[  505.102503] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.259595] bond0: (slave eth0): Releasing backup interface
[  509.289130] bond0 (unregistering): Released all slaves