[  512.061420] bond0: (slave eth0): making interface the new active one
[  512.061491] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.314108] bond0: (slave eth0): Releasing backup interface
[  516.406832] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.598009] bond0: (slave eth0): Releasing backup interface
[  520.624986] bond0 (unregistering): Released all slaves