[  518.262354] bond0: (slave eth0): making interface the new active one
[  518.262442] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.445282] bond0: (slave eth0): Releasing backup interface
[  522.514474] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.677695] bond0: (slave eth0): Releasing backup interface
[  526.699183] bond0 (unregistering): Released all slaves