[  537.919675] bond0: (slave eth0): making interface the new active one
[  537.919754] bond0: (slave eth0): Enslaving as an active interface with an up link
[  542.163233] bond0: (slave eth0): Releasing backup interface
[  542.249694] bond0: (slave eth0): Enslaving as an active interface with an up link
[  546.444855] bond0: (slave eth0): Releasing backup interface
[  546.465710] bond0 (unregistering): Released all slaves