[  512.467789] bond0: (slave eth0): making interface the new active one
[  512.467884] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.700340] bond0: (slave eth0): Releasing backup interface
[  516.820822] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.057062] bond0: (slave eth0): Releasing backup interface
[  521.092966] bond0 (unregistering): Released all slaves