[  516.603087] bond0: (slave eth0): making interface the new active one
[  516.603177] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.785029] bond0: (slave eth0): Releasing backup interface
[  520.866392] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.011372] bond0: (slave eth0): Releasing backup interface
[  525.044693] bond0 (unregistering): Released all slaves