[  520.285442] bond0: (slave eth0): making interface the new active one
[  520.285553] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.425958] bond0: (slave eth0): Releasing backup interface
[  524.495321] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.655372] bond0: (slave eth0): Releasing backup interface
[  528.678569] bond0 (unregistering): Released all slaves