[  512.672249] bond0: (slave eth0): making interface the new active one
[  512.672346] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.880846] bond0: (slave eth0): Releasing backup interface
[  516.971687] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.167872] bond0: (slave eth0): Releasing backup interface
[  521.193757] bond0 (unregistering): Released all slaves