[  519.684201] bond0: (slave eth0): making interface the new active one
[  519.684278] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.862448] bond0: (slave eth0): Releasing backup interface
[  523.933243] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.092507] bond0: (slave eth0): Releasing backup interface
[  528.114395] bond0 (unregistering): Released all slaves