[  512.520315] bond0: (slave eth0): making interface the new active one
[  512.520416] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.764480] bond0: (slave eth0): Releasing backup interface
[  516.876308] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.047957] bond0: (slave eth0): Releasing backup interface
[  521.081951] bond0 (unregistering): Released all slaves