[  516.360969] bond0: (slave eth0): making interface the new active one
[  516.361056] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.605308] bond0: (slave eth0): Releasing backup interface
[  520.715579] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.881073] bond0: (slave eth0): Releasing backup interface
[  524.911969] bond0 (unregistering): Released all slaves