[  518.351307] bond0: (slave eth0): making interface the new active one
[  518.351409] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.574414] bond0: (slave eth0): Releasing backup interface
[  522.652684] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.795736] bond0: (slave eth0): Releasing backup interface
[  526.833775] bond0 (unregistering): Released all slaves