[  519.620746] bond0: (slave eth0): making interface the new active one
[  519.620887] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.801065] bond0: (slave eth0): Releasing backup interface
[  523.887286] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.088446] bond0: (slave eth0): Releasing backup interface
[  528.125436] bond0 (unregistering): Released all slaves