[  515.571511] bond0: (slave eth0): making interface the new active one
[  515.571607] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.780163] bond0: (slave eth0): Releasing backup interface
[  519.907188] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.126035] bond0: (slave eth0): Releasing backup interface
[  524.154014] bond0 (unregistering): Released all slaves