[  515.148553] bond0: (slave eth0): making interface the new active one
[  515.148653] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.381335] bond0: (slave eth0): Releasing backup interface
[  519.484702] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.671931] bond0: (slave eth0): Releasing backup interface
[  523.694716] bond0 (unregistering): Released all slaves