[  509.203218] bond0: (slave eth0): making interface the new active one
[  509.203282] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.436392] bond0: (slave eth0): Releasing backup interface
[  513.546206] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.717031] bond0: (slave eth0): Releasing backup interface
[  517.747032] bond0 (unregistering): Released all slaves