--- libaitio/src/bpf.c	2013/06/25 16:42:41	1.1.2.12
+++ libaitio/src/bpf.c	2013/06/25 19:28:48	1.1.2.13
@@ -122,6 +122,17 @@ io_etherOpen(const char *csIface, int flags, int whdr,
 		return -1;
 	}
 
+	if (ioctl(eth, BIOCIMMEDIATE, &n) == -1) {
+		LOGERR;
+		close(eth);
+		return -1;
+	}
+	if (whdr && ioctl(eth, BIOCSHDRCMPLT, &n) == -1) {
+		LOGERR;
+		close(eth);
+		return -1;
+	}
+
 	if (!zcbuf) {
 		if (ioctl(eth, BIOCGBLEN, &n) == -1) {
 			LOGERR;
@@ -162,17 +173,6 @@ io_etherOpen(const char *csIface, int flags, int whdr,
 		if (buflen && *buflen)
 			*buflen = n;
 #endif
-	}
-
-	if (ioctl(eth, BIOCIMMEDIATE, &n) == -1) {
-		LOGERR;
-		close(eth);
-		return -1;
-	}
-	if (whdr && ioctl(eth, BIOCSHDRCMPLT, &n) == -1) {
-		LOGERR;
-		close(eth);
-		return -1;
 	}
 
 	if (csIface)