From: Steven Barth <steven@midlink.org>
Date: Wed, 30 Oct 2013 13:13:50 +0000 (+0100)
Subject: React to carrier down events as well
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c570ee307de12e47e8a370fb66d8f99f14d4b064;p=project%2Fodhcp6c.git

React to carrier down events as well
---

diff --git a/src/ra.c b/src/ra.c
index 971a172..c8ccb88 100644
--- a/src/ra.c
+++ b/src/ra.c
@@ -150,6 +150,7 @@ static void update_proc(const char *sect, const char *opt, uint32_t value)
 
 bool ra_link_up(void)
 {
+	static bool firstcall = true;
 	struct {
 		struct nlmsghdr hdr;
 		struct ifinfomsg msg;
@@ -167,14 +168,16 @@ bool ra_link_up(void)
 			continue;
 
 		bool hascarrier = resp.msg.ifi_flags & IFF_LOWER_UP;
-		if (nocarrier && hascarrier)
+		if (!firstcall && nocarrier != !hascarrier)
 			ret = true;
 
 		nocarrier = !hascarrier;
+		firstcall = false;
 	} while (read > 0);
 
 	if (ret) {
-		syslog(LOG_NOTICE, "carrier up event on %s", if_name);
+		syslog(LOG_NOTICE, "carrier => %i event on %s", (int)!nocarrier, if_name);
+
 		rs_attempt = 0;
 		ra_send_rs(SIGALRM);
 	}