We upgraded to interface_traffic 5.45 a little while ago, and now we are seeing that our interface usage graphs are completely wrong. It seems likely that the probe us using the OIDs for the 32-bit interface counters rather than the 64-bit interface counters. We were running a pretty old version before upgrading, so I'm not sure how recently this issue might have been introduced into the probe.
Anyone else seeing this problem? Or anyone seeing it work properly with high-volume interfaces that can't rely on 32-bit counters?