[  502.678433] bond0: (slave eth0): making interface the new active one
[  502.678574] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.892282] bond0: (slave eth0): Releasing backup interface
[  506.974403] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.119591] bond0: (slave eth0): Releasing backup interface
[  511.152193] bond0 (unregistering): Released all slaves