From: Magnus Granberg <zorry@ume.nu>
https://bugs.gentoo.org/232100
Remove nonsense O_CREAT flag

--- pktsetup/pktsetup.c	2008-06-19 00:27:08.000000000 +0200
+++ pktsetup/pktsetup.c	2008-06-19 00:20:31.000000000 +0200
@@ -85,7 +85,7 @@
 {
 	int pkt_fd, dev_fd, cmd;
 
-	if ((pkt_fd = open(pkt_device, O_RDONLY | O_CREAT)) == -1) {
+	if ((pkt_fd = open(pkt_device, O_RDONLY)) == -1) {
 		perror("open packet device");
 		return;
 	}