[  504.512291] bond0: (slave eth0): making interface the new active one
[  504.512386] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.682335] bond0: (slave eth0): Releasing backup interface
[  508.744943] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.909539] bond0: (slave eth0): Releasing backup interface
[  512.939538] bond0 (unregistering): Released all slaves