[  500.602169] bond0: (slave eth0): making interface the new active one
[  500.602312] bond0: (slave eth0): Enslaving as an active interface with an up link
[  504.787405] bond0: (slave eth0): Releasing backup interface
[  504.856509] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.015664] bond0: (slave eth0): Releasing backup interface
[  509.038187] bond0 (unregistering): Released all slaves