[  517.100186] bond0: (slave eth0): making interface the new active one
[  517.100305] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.294410] bond0: (slave eth0): Releasing backup interface
[  521.369756] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.518360] bond0: (slave eth0): Releasing backup interface
[  525.555318] bond0 (unregistering): Released all slaves