From: Steven Barth <steven@midlink.org>
Date: Sat, 27 Sep 2014 16:54:43 +0000 (+0200)
Subject: Send RS alternatingly with and without source MAC
X-Git-Tag: debian/1.1+git20160131-1~52
X-Git-Url: https://git.decadent.org.uk/gitweb/?p=odhcp6c.git;a=commitdiff_plain;h=3e52a1448eee0fbf7ff67c123265bedcbc9c26d0

Send RS alternatingly with and without source MAC
---

diff --git a/src/ra.c b/src/ra.c
index b700c9a..baaee9b 100644
--- a/src/ra.c
+++ b/src/ra.c
@@ -146,7 +146,7 @@ static void ra_send_rs(int signal __attribute__((unused)))
 	struct ifreq ifr;
 	memset(&ifr, 0, sizeof(ifr));
 	strncpy(ifr.ifr_name, if_name, sizeof(ifr.ifr_name));
-	if (!ioctl(sock, SIOCGIFHWADDR, &ifr)
+	if ((rs_attempt % 2 == 0) && !ioctl(sock, SIOCGIFHWADDR, &ifr)
 			&& memcmp(rs.lladdr.data, ifr.ifr_hwaddr.sa_data, 6))
 		memcpy(rs.lladdr.data, ifr.ifr_hwaddr.sa_data, 6);
 	else