relay: add notice in help about trace mode
@@ -362,6 +362,9 @@ do_usage(char *name, int exitcode)
printf(" -c characters to allow next to [A-Za-z0-9], defaults to -_:#\n");
printf(" -d debug mode: currently writes statistics to log, prints hash\n"
" ring contents and matching position in test mode (-t)\n");
+#ifdef ENABLE_TRACE
+ printf(" add another -d to enable (very noisy) trace mode\n");
+#endif
printf(" -s submission mode: don't add any metrics to the stream like\n"
" statistics, report drop counts and queue pressure to log\n");
printf(" -t config test mode: prints rule matches from input on stdin\n");
