[  518.761733] bond0: (slave eth0): making interface the new active one
[  518.761812] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.969338] bond0: (slave eth0): Releasing backup interface
[  523.086918] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.255024] bond0: (slave eth0): Releasing backup interface
[  527.271938] bond0 (unregistering): Released all slaves