+static int
+pass_packet(ppa, mp, outbound)
+ upperstr_t *ppa;
+ mblk_t *mp;
+ int outbound;
+{
+ /*
+ * Here is where we might, in future, decide whether to pass
+ * or drop the packet, and whether it counts as link activity.
+ */
+ if (outbound)
+ ppa->last_sent = time;
+ else
+ ppa->last_recv = time;
+ return 1;
+}
+