[  504.139132] bond0: (slave eth0): making interface the new active one
[  504.139215] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.307203] bond0: (slave eth0): Releasing backup interface
[  508.379470] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.531564] bond0: (slave eth0): Releasing backup interface
[  512.560269] bond0 (unregistering): Released all slaves