[  512.543570] bond0: (slave eth0): making interface the new active one
[  512.543655] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.760237] bond0: (slave eth0): Releasing backup interface
[  516.860021] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.046001] bond0: (slave eth0): Releasing backup interface
[  521.077011] bond0 (unregistering): Released all slaves