[  516.373295] bond0: (slave eth0): making interface the new active one
[  516.373378] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.599361] bond0: (slave eth0): Releasing backup interface
[  520.700957] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.885001] bond0: (slave eth0): Releasing backup interface
[  524.916958] bond0 (unregistering): Released all slaves