This read-only Counter counts packets delivered by this interface's sub-layer to a higher layer that were addressed to a multicast or broadcast address, though it is deprecated in favor of separate multicast and broadcast packet counters. An admin monitoring an older device without those newer counters relies on this combined figure to spot excessive broadcast/multicast traffic on a DS0 channel. For example, an unexpectedly high ctDs0ifInNUcastPkts value on a point-to-point DS0 link, which shouldn't normally see much broadcast traffic, would prompt the admin to investigate a broadcast storm.