[  516.322207] bond0: (slave eth0): making interface the new active one
[  516.322293] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.527925] bond0: (slave eth0): Releasing backup interface
[  520.603461] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.752139] bond0: (slave eth0): Releasing backup interface
[  524.788140] bond0 (unregistering): Released all slaves