[  516.507090] bond0: (slave eth0): making interface the new active one
[  516.507168] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.723968] bond0: (slave eth0): Releasing backup interface
[  520.796968] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.956429] bond0: (slave eth0): Releasing backup interface
[  524.984423] bond0 (unregistering): Released all slaves