[  516.562890] bond0: (slave eth0): making interface the new active one
[  516.563000] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.720350] bond0: (slave eth0): Releasing backup interface
[  520.777183] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.942153] bond0: (slave eth0): Releasing backup interface
[  524.973052] bond0 (unregistering): Released all slaves