[  515.323055] bond0: (slave eth0): making interface the new active one
[  515.323198] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.508174] bond0: (slave eth0): Releasing backup interface
[  519.588980] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.734640] bond0: (slave eth0): Releasing backup interface
[  523.761294] bond0 (unregistering): Released all slaves