[  521.421394] bond0: (slave eth0): making interface the new active one
[  521.421512] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.577412] bond0: (slave eth0): Releasing backup interface
[  525.640236] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.807405] bond0: (slave eth0): Releasing backup interface
[  529.845340] bond0 (unregistering): Released all slaves