From: Roy Marples <roy@marples.name>
Date: Fri, 11 Jul 2008 10:13:23 +0000 (+0000)
Subject: Save a few bytes here. Also, fill with 0 so that we mirror the BSD gratuitous ARP... 
X-Git-Tag: v4.0.2~203
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e94b2aca5b57b1d9518750dda2b5e5aa83bf5a0;p=thirdparty%2Fdhcpcd.git

Save a few bytes here. Also, fill with 0 so that we mirror the BSD gratuitous ARP when adding an address.
---

diff --git a/net.c b/net.c
index 4dae17b5..f86bff28 100644
--- a/net.c
+++ b/net.c
@@ -638,10 +638,10 @@ send_arp(const struct interface *iface, int op, in_addr_t sip, in_addr_t tip)
 	p += iface->hwlen;
 	memcpy(p, &sip, sizeof(sip));
 	p += sizeof(sip);
-	/* ARP requests should ignore this, but we fill with 0xff
-	 * for broadcast. */
-	memset(p, 0xff, iface->hwlen);
-	p += iface->hwlen;
+	/* ARP requests should ignore this */
+	retval = iface->hwlen;
+	while (retval--)
+		*p++ = '\0';
 	memcpy(p, &tip, sizeof(tip));
 	p += sizeof(tip);
 	/* Zero pad if needed */