[  520.044582] bond0: (slave eth0): making interface the new active one
[  520.044664] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.254339] bond0: (slave eth0): Releasing backup interface
[  524.325340] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.472816] bond0: (slave eth0): Releasing backup interface
[  528.506742] bond0 (unregistering): Released all slaves