[  516.283317] bond0: (slave eth0): making interface the new active one
[  516.283405] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.467544] bond0: (slave eth0): Releasing backup interface
[  520.538261] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.692460] bond0: (slave eth0): Releasing backup interface
[  524.727396] bond0 (unregistering): Released all slaves