[  502.473121] bond0: (slave eth0): making interface the new active one
[  502.473206] bond0: (slave eth0): Enslaving as an active interface with an up link
[  506.702584] bond0: (slave eth0): Releasing backup interface
[  506.793096] bond0: (slave eth0): Enslaving as an active interface with an up link
[  510.995749] bond0: (slave eth0): Releasing backup interface
[  511.015892] bond0 (unregistering): Released all slaves