[  515.712886] bond0: (slave eth0): making interface the new active one
[  515.712973] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.895398] bond0: (slave eth0): Releasing backup interface
[  519.969601] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.114203] bond0: (slave eth0): Releasing backup interface
[  524.154135] bond0 (unregistering): Released all slaves