[  514.242385] bond0: (slave eth0): making interface the new active one
[  514.242482] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.417368] bond0: (slave eth0): Releasing backup interface
[  518.500014] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.640171] bond0: (slave eth0): Releasing backup interface
[  522.662154] bond0 (unregistering): Released all slaves