[  511.884050] bond0: (slave eth0): making interface the new active one
[  511.884162] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.116674] bond0: (slave eth0): Releasing backup interface
[  516.230024] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.410313] bond0: (slave eth0): Releasing backup interface
[  520.438986] bond0 (unregistering): Released all slaves