[  520.571536] bond0: (slave eth0): making interface the new active one
[  520.571626] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.752995] bond0: (slave eth0): Releasing backup interface
[  524.835366] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.977829] bond0: (slave eth0): Releasing backup interface
[  529.011767] bond0 (unregistering): Released all slaves