[  518.069023] bond0: (slave eth0): making interface the new active one
[  518.069120] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.297274] bond0: (slave eth0): Releasing backup interface
[  522.397965] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.590384] bond0: (slave eth0): Releasing backup interface
[  526.620441] bond0 (unregistering): Released all slaves