[  504.941928] bond0: (slave eth0): making interface the new active one
[  504.942031] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.102037] bond0: (slave eth0): Releasing backup interface
[  509.172866] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.331335] bond0: (slave eth0): Releasing backup interface
[  513.365278] bond0 (unregistering): Released all slaves