[  515.069442] bond0: (slave eth0): making interface the new active one
[  515.069541] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.259512] bond0: (slave eth0): Releasing backup interface
[  519.343299] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.484290] bond0: (slave eth0): Releasing backup interface
[  523.511199] bond0 (unregistering): Released all slaves