tx_total and tx_total , the total bytes used in vm / hypervisor network interfaces, were added to vds_interface_statistics and vm_interface_statistics. We want to collect the last samples for each so we can allow the users, for a specific time period calculate the rx/tx used, per vm / hypervisor interface.
Verified in rhevm-reports-3.6.0-0.6.el6ev.noarch
oVirt 3.6.0 has been released on November 4th, 2015 and should fix this issue. If problems still persist, please open a new BZ and reference this one.