[  516.243507] bond0: (slave eth0): making interface the new active one
[  516.243573] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.431385] bond0: (slave eth0): Releasing backup interface
[  520.538710] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.719358] bond0: (slave eth0): Releasing backup interface
[  524.744311] bond0 (unregistering): Released all slaves