[  513.024375] bond0: (slave eth0): making interface the new active one
[  513.024454] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.200896] bond0: (slave eth0): Releasing backup interface
[  517.275938] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.433146] bond0: (slave eth0): Releasing backup interface
[  521.472207] bond0 (unregistering): Released all slaves