[  520.030413] bond0: (slave eth0): making interface the new active one
[  520.030510] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.255719] bond0: (slave eth0): Releasing backup interface
[  524.377968] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.597941] bond0: (slave eth0): Releasing backup interface
[  528.617911] bond0 (unregistering): Released all slaves