[  517.878508] bond0: (slave eth0): making interface the new active one
[  517.878622] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.058334] bond0: (slave eth0): Releasing backup interface
[  522.126806] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.290710] bond0: (slave eth0): Releasing backup interface