[  517.521408] bond0: (slave eth0): making interface the new active one
[  517.521510] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.670804] bond0: (slave eth0): Releasing backup interface
[  521.720431] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.899331] bond0: (slave eth0): Releasing backup interface
[  525.933340] bond0 (unregistering): Released all slaves