[  515.143306] bond0: (slave eth0): making interface the new active one
[  515.143383] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.326543] bond0: (slave eth0): Releasing backup interface
[  519.408310] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.551617] bond0: (slave eth0): Releasing backup interface
[  523.586665] bond0 (unregistering): Released all slaves