[  504.220312] bond0: (slave eth0): making interface the new active one
[  504.220404] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.427144] bond0: (slave eth0): Releasing backup interface
[  508.492079] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.651264] bond0: (slave eth0): Releasing backup interface
[  512.690256] bond0 (unregistering): Released all slaves