[  501.530624] bond0: (slave eth0): making interface the new active one
[  501.530728] bond0: (slave eth0): Enslaving as an active interface with an up link
[  505.736782] bond0: (slave eth0): Releasing backup interface
[  505.818270] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.957493] bond0: (slave eth0): Releasing backup interface
[  509.989522] bond0 (unregistering): Released all slaves