[  512.236056] bond0: (slave eth0): making interface the new active one
[  512.236125] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.446783] bond0: (slave eth0): Releasing backup interface
[  516.559672] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.733373] bond0: (slave eth0): Releasing backup interface
[  520.759260] bond0 (unregistering): Released all slaves