[  521.669243] bond0: (slave eth0): making interface the new active one
[  521.669338] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.832199] bond0: (slave eth0): Releasing backup interface
[  525.891261] bond0: (slave eth0): Enslaving as an active interface with an up link
[  530.062297] bond0: (slave eth0): Releasing backup interface
[  530.085229] bond0 (unregistering): Released all slaves