[  518.329765] bond0: (slave eth0): making interface the new active one
[  518.329844] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.525081] bond0: (slave eth0): Releasing backup interface
[  522.629560] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.805148] bond0: (slave eth0): Releasing backup interface
[  526.827117] bond0 (unregistering): Released all slaves