diff -ru sysklogd-1.4.1.orig/syslogd.c sysklogd-1.4.1/syslogd.c
--- sysklogd-1.4.1.orig/syslogd.c	Mon Mar 12 06:40:10 2001
+++ sysklogd-1.4.1/syslogd.c	Thu Aug 16 03:16:05 2001
@@ -730,6 +730,7 @@
 int	MarkInterval = 20 * 60;	/* interval between marks in seconds */
 int	MarkSeq = 0;		/* mark sequence number */
 int	NoFork = 0; 		/* don't fork - don't run in daemon mode */
+int     DisableDNS = 0;		/* don't look up IP addresses of incoming messages */
 int	AcceptRemote = 0;	/* receive messages that come via UDP */
 char	**StripDomains = NULL;	/* these domains may be stripped before writing logs */
 char	**LocalHosts = NULL;	/* these hosts are logged with their hostname */
@@ -829,7 +830,7 @@
 		funix[i]  = -1;
 	}
 
-	while ((ch = getopt(argc, argv, "a:dhf:l:m:np:rs:v")) != EOF)
+	while ((ch = getopt(argc, argv, "a:dhf:l:m:np:rs:vx")) != EOF)
 		switch((char)ch) {
 		case 'a':
 			if (nfunix < MAXFUNIX)
@@ -877,6 +878,9 @@
 		case 'v':
 			printf("syslogd %s.%s\n", VERSION, PATCHLEVEL);
 			exit (0);
+		case 'x':
+			DisableDNS = 1;
+			break;
 		case '?':
 		default:
 			usage();
@@ -1174,7 +1178,7 @@
 
 int usage()
 {
-	fprintf(stderr, "usage: syslogd [-drvh] [-l hostlist] [-m markinterval] [-n] [-p path]\n" \
+	fprintf(stderr, "usage: syslogd [-drvxh] [-l hostlist] [-m markinterval] [-n] [-p path]\n" \
 		" [-s domainlist] [-f conffile]\n");
 	exit(1);
 }
@@ -2013,7 +2017,10 @@
 		dprintf("Malformed from address.\n");
 		return ("???");
 	}
-	hp = gethostbyaddr((char *) &f->sin_addr, sizeof(struct in_addr), \
+	if (DisableDNS)
+	  hp = 0;
+	else
+	  hp = gethostbyaddr((char *) &f->sin_addr, sizeof(struct in_addr), \
 			   f->sin_family);
 	if (hp == 0) {
 		dprintf("Host name for your address (%s) unknown.\n",