[  520.452755] bond0: (slave eth0): making interface the new active one
[  520.452867] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.620937] bond0: (slave eth0): Releasing backup interface
[  524.683151] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.843361] bond0: (slave eth0): Releasing backup interface
[  528.872264] bond0 (unregistering): Released all slaves