[  513.259640] bond0: (slave eth0): making interface the new active one
[  513.259711] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.468389] bond0: (slave eth0): Releasing backup interface
[  517.573846] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.748952] bond0: (slave eth0): Releasing backup interface
[  521.781973] bond0 (unregistering): Released all slaves