[  517.053444] bond0: (slave eth0): making interface the new active one
[  517.053544] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.301944] bond0: (slave eth0): Releasing backup interface
[  521.414443] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.599695] bond0: (slave eth0): Releasing backup interface
[  525.628029] bond0 (unregistering): Released all slaves