[  515.561059] bond0: (slave eth0): making interface the new active one
[  515.561148] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.775360] bond0: (slave eth0): Releasing backup interface
[  519.877304] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.056108] bond0: (slave eth0): Releasing backup interface
[  524.083038] bond0 (unregistering): Released all slaves