[  516.617766] bond0: (slave eth0): making interface the new active one
[  516.617836] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.781266] bond0: (slave eth0): Releasing backup interface
[  520.862048] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.009738] bond0: (slave eth0): Releasing backup interface
[  525.032579] bond0 (unregistering): Released all slaves