[  516.033926] bond0: (slave eth0): making interface the new active one
[  516.034001] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.214099] bond0: (slave eth0): Releasing backup interface
[  520.328609] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.502869] bond0: (slave eth0): Releasing backup interface
[  524.530826] bond0 (unregistering): Released all slaves