[  518.040036] bond0: (slave eth0): making interface the new active one
[  518.040149] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.190018] bond0: (slave eth0): Releasing backup interface
[  522.253205] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.415350] bond0: (slave eth0): Releasing backup interface
[  526.439301] bond0 (unregistering): Released all slaves