diff -up dhcprelay-1.2/dhcprelay.c.foreground dhcprelay-1.2/dhcprelay.c
--- dhcprelay-1.2/dhcprelay.c.foreground	2011-01-11 13:46:12.985241996 +0100
+++ dhcprelay-1.2/dhcprelay.c	2011-01-11 13:53:32.135116637 +0100
@@ -53,6 +53,7 @@ struct request {
 struct request *requests=NULL;
 
 int DEBUG=0;
+int FOREGROUND=0;
 
 int bootpc_port=0;
 int bootps_port=0;
@@ -74,13 +75,18 @@ char *wait=".oOo";
 int main(int argc,char **argv) {
     int waitcounter=0;
 
-    while (argc>1 && strcmp(argv[1],"-d")==0) {
-	DEBUG++;
+    while (argc>1) {
+        if (strcmp(argv[1],"-d")==0) {
+	    DEBUG++;
+	} else if (strcmp(argv[1],"-f")!=0) {
+	    break;
+	}
+	FOREGROUND++;
 	argv++;
 	argc--;
     }
 
-    if (DEBUG==0) {
+    if (FOREGROUND==0) {
 	pid_t p;
 	if (fork()) {
 	    sleep(3);
@@ -114,7 +120,7 @@ int main(int argc,char **argv) {
 
     if (argc==1) {
 	printf(
-	    "Usage: %s [-d] <interface[:ipaddress]> <dhcpserver>\n"
+	    "Usage: %s [-d|-f] <interface[:ipaddress]> <dhcpserver>\n"
 	    "Example: %s fxp0 10.192.0.1\n"
 	    "Example: %s fxp0:192.168.1.1 10.192.0.1\n",
 	    argv[0],argv[0],argv[0]