[  516.500218] bond0: (slave eth0): making interface the new active one
[  516.500312] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.733117] bond0: (slave eth0): Releasing backup interface
[  520.843716] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.014272] bond0: (slave eth0): Releasing backup interface
[  525.045195] bond0 (unregistering): Released all slaves