[  516.674648] bond0: (slave eth0): making interface the new active one
[  516.674769] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.924325] bond0: (slave eth0): Releasing backup interface
[  521.034221] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.282387] bond0: (slave eth0): Releasing backup interface
[  525.322004] bond0 (unregistering): Released all slaves