[  516.689510] bond0: (slave eth0): making interface the new active one
[  516.689601] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.881290] bond0: (slave eth0): Releasing backup interface
[  520.984688] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.167014] bond0: (slave eth0): Releasing backup interface
[  525.190975] bond0 (unregistering): Released all slaves