[  504.124053] bond0: (slave eth0): making interface the new active one
[  504.124186] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.299222] bond0: (slave eth0): Releasing backup interface
[  508.385852] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.525481] bond0: (slave eth0): Releasing backup interface
[  512.550335] bond0 (unregistering): Released all slaves