router: skip RA and wait for LINK-LOCAL to be assigned

[project/odhcpd.git] / src / router.c

diff --git a/src/router.c b/src/router.c
index 7e66e3c6418fbd5ca1b91dc7997c7dce03597892..eca0bf7a282278fed0489bfabf8448003ad3bef3 100644 (file)
--- a/src/router.c
+++ b/src/router.c
@@ -621,6 +621,11 @@ static int send_router_advert(struct interface *iface, const struct in6_addr *fr
        msecs = calc_adv_interval(iface, minvalid, &maxival);
        lifetime = calc_ra_lifetime(iface, maxival);
 
+       if (!iface->have_link_local) {
+               syslog(LOG_NOTICE, "Skip sending a RA on %s as no link local address is available", iface->name);
+               goto out;
+       }
+
        if (default_route && valid_prefix) {
                adv.h.nd_ra_router_lifetime = htons(lifetime < UINT16_MAX ? lifetime : UINT16_MAX);
        } else {
@@ -782,6 +787,7 @@ static int send_router_advert(struct interface *iface, const struct in6_addr *fr
        if (odhcpd_send(iface->router_event.uloop.fd, &dest, iov, ARRAY_SIZE(iov), iface) > 0)
                iface->ra_sent++;
 
+out:
        free(pfxs);
        free(routes);