[  520.038399] bond0: (slave eth0): making interface the new active one
[  520.038484] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.237737] bond0: (slave eth0): Releasing backup interface
[  524.301336] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.462177] bond0: (slave eth0): Releasing backup interface
[  528.493212] bond0 (unregistering): Released all slaves