[  521.609326] bond0: (slave eth0): making interface the new active one
[  521.609464] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.781473] bond0: (slave eth0): Releasing backup interface
[  525.866394] bond0: (slave eth0): Enslaving as an active interface with an up link
[  530.000647] bond0: (slave eth0): Releasing backup interface
[  530.016459] bond0 (unregistering): Released all slaves