[  499.943288] bond0: (slave eth0): making interface the new active one
[  499.943384] bond0: (slave eth0): Enslaving as an active interface with an up link
[  504.141296] bond0: (slave eth0): Releasing backup interface
[  504.212317] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.369186] bond0: (slave eth0): Releasing backup interface
[  508.405034] bond0 (unregistering): Released all slaves