Does sshlockout_pf actually work?

[GoldServe]

I never see any messages below even though I get tonnes of failed login attempts.

if (sscanf(str, "%d.%d.%d.%d", &n1, &n2, &n3, &n4) == 4) {
**       syslog(LOG_ERR, "Illegal ssh login attempt, locking out %d.%d.%d.%d\n",
         n1, n2, n3, n4);**
       snprintf(buf, sizeof(buf), "/sbin/pfctl -t sshlockout -T add %d.%d.%d.%d",
         n1, n2, n3, n4);
       system(buf);
   }