[  513.114907] bond0: (slave eth0): making interface the new active one
[  513.115003] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.326432] bond0: (slave eth0): Releasing backup interface
[  517.403909] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.560465] bond0: (slave eth0): Releasing backup interface
[  521.588277] bond0 (unregistering): Released all slaves