[  512.619146] bond0: (slave eth0): making interface the new active one
[  512.619211] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.836293] bond0: (slave eth0): Releasing backup interface
[  516.945525] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.123184] bond0: (slave eth0): Releasing backup interface
[  521.152028] bond0 (unregistering): Released all slaves