[  515.033831] bond0: (slave eth0): making interface the new active one
[  515.033927] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.179349] bond0: (slave eth0): Releasing backup interface
[  519.252126] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.405065] bond0: (slave eth0): Releasing backup interface
[  523.435139] bond0 (unregistering): Released all slaves