From: Steven Barth <steven@midlink.org>
Date: Tue, 29 Jan 2013 10:36:32 +0000 (+0100)
Subject: IPv6 prefixes: conform to RFC 6204 requirement L13
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=commitdiff_plain;h=a637dba6e4393f0ec8f8bf294fbeb89b8e4ebc66

IPv6 prefixes: conform to RFC 6204 requirement L13
---

diff --git a/interface-ip.c b/interface-ip.c
index ea4c3dd..56f8bd9 100644
--- a/interface-ip.c
+++ b/interface-ip.c
@@ -456,8 +456,13 @@ interface_set_prefix_address(struct interface *iface, bool add,
 	addr.valid_until = assignment->prefix->valid_until;
 
 	if (!add) {
-		if (assignment->enabled)
-			system_del_address(l3_downlink, &addr);
+		if (assignment->enabled) {
+			time_t now = system_get_rtime();
+			addr.preferred_until = now;
+			if (addr.valid_until - now > 7200)
+				addr.valid_until = now + 7200;
+			system_add_address(l3_downlink, &addr);
+		}
 	} else {
 		system_add_address(l3_downlink, &addr);