[  518.948860] bond0: (slave eth0): making interface the new active one
[  518.948929] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.145401] bond0: (slave eth0): Releasing backup interface
[  523.218590] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.375314] bond0: (slave eth0): Releasing backup interface
[  527.410384] bond0 (unregistering): Released all slaves