[  503.550672] bond0: (slave eth0): making interface the new active one
[  503.550761] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.732557] bond0: (slave eth0): Releasing backup interface
[  507.819332] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.963434] bond0: (slave eth0): Releasing backup interface
[  511.991463] bond0 (unregistering): Released all slaves