[  518.156309] bond0: (slave eth0): making interface the new active one
[  518.156396] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.393712] bond0: (slave eth0): Releasing backup interface
[  522.503968] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.687611] bond0: (slave eth0): Releasing backup interface
[  526.715171] bond0 (unregistering): Released all slaves