[  516.675761] bond0: (slave eth0): making interface the new active one
[  516.675857] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.847611] bond0: (slave eth0): Releasing backup interface
[  520.937028] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.119279] bond0: (slave eth0): Releasing backup interface
[  525.160225] bond0 (unregistering): Released all slaves