[  519.153846] bond0: (slave eth0): making interface the new active one
[  519.153917] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.339142] bond0: (slave eth0): Releasing backup interface
[  523.403711] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.565575] bond0: (slave eth0): Releasing backup interface
[  527.599566] bond0 (unregistering): Released all slaves