[  518.385542] bond0: (slave eth0): making interface the new active one
[  518.385631] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.593409] bond0: (slave eth0): Releasing backup interface
[  522.714898] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.944125] bond0: (slave eth0): Releasing backup interface
[  526.977007] bond0 (unregistering): Released all slaves