[  519.551372] bond0: (slave eth0): making interface the new active one
[  519.551464] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.720056] bond0: (slave eth0): Releasing backup interface
[  523.792178] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.948314] bond0: (slave eth0): Releasing backup interface
[  527.971030] bond0 (unregistering): Released all slaves