[  504.585137] bond0: (slave eth0): making interface the new active one
[  504.585238] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.760602] bond0: (slave eth0): Releasing backup interface
[  508.840360] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.986383] bond0: (slave eth0): Releasing backup interface
[  513.003440] bond0 (unregistering): Released all slaves