diff -urN bridge.org/brctl/brctld.c bridge/brctl/brctld.c
--- bridge.org/brctl/brctld.c	Tue Feb 22 00:26:59 2000
+++ bridge/brctl/brctld.c	Tue Feb 22 00:51:15 2000
@@ -163,6 +163,11 @@
 	int sock;
 	int x;
 
+	if (getuid() != 0) {
+		fprintf(stderr, "must be run as root...\n");
+		return 1;
+	}
+		
 	if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
 		perror("socket");
 		return 1;