[  516.313153] bond0: (slave eth0): making interface the new active one
[  516.313215] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.537301] bond0: (slave eth0): Releasing backup interface
[  520.634811] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.822022] bond0: (slave eth0): Releasing backup interface
[  524.855982] bond0 (unregistering): Released all slaves