[  519.522805] bond0: (slave eth0): making interface the new active one
[  519.522902] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.764518] bond0: (slave eth0): Releasing backup interface
[  523.862025] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.050963] bond0: (slave eth0): Releasing backup interface
[  528.084890] bond0 (unregistering): Released all slaves