[  520.463700] bond0: (slave eth0): making interface the new active one
[  520.463784] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.623422] bond0: (slave eth0): Releasing backup interface
[  524.694227] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.849810] bond0: (slave eth0): Releasing backup interface
[  528.874725] bond0 (unregistering): Released all slaves