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diff -up ntp-4.2.6p5/ntpd/ntp_io.c.mcastjoin ntp-4.2.6p5/ntpd/ntp_io.c
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--- ntp-4.2.6p5/ntpd/ntp_io.c.mcastjoin 2015-04-13 14:41:59.108323479 +0200
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+++ ntp-4.2.6p5/ntpd/ntp_io.c 2015-04-13 14:43:46.468637433 +0200
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@@ -2038,6 +2038,32 @@ update_interfaces(
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if (sys_bclient)
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io_setbclient();
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+ /*
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+ * Check multicast interfaces and try to join multicast groups if
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+ * not joined yet.
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+ */
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+ for (ep = ep_list; ep != NULL; ep = ep->elink) {
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+ remaddr_t *entry;
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+
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+ if (!(INT_MCASTIF & ep->flags) || (INT_MCASTOPEN & ep->flags))
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+ continue;
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+
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+ /* Find remote address that was linked to this interface */
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+ for (entry = remoteaddr_list;
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+ entry != NULL;
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+ entry = entry->link) {
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+ if (entry->ep == ep) {
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+ if (socket_multicast_enable(ep, &entry->addr)) {
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+ msyslog(LOG_INFO,
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+ "Joined %s socket to multicast group %s",
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+ stoa(&ep->sin),
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+ stoa(&entry->addr));
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+ }
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+ break;
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+ }
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+ }
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+ }
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+
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return new_interface_found;
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}
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@@ -2467,12 +2493,12 @@ socket_multicast_enable(
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IP_ADD_MEMBERSHIP,
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(char *)&mreq,
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sizeof(mreq))) {
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- msyslog(LOG_ERR,
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+ DPRINTF(2, (
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"setsockopt IP_ADD_MEMBERSHIP failed: %m on socket %d, addr %s for %x / %x (%s)",
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iface->fd, stoa(&iface->sin),
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mreq.imr_multiaddr.s_addr,
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mreq.imr_interface.s_addr,
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- stoa(maddr));
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+ stoa(maddr)));
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return ISC_FALSE;
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}
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DPRINTF(4, ("Added IPv4 multicast membership on socket %d, addr %s for %x / %x (%s)\n",
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@@ -2497,10 +2523,10 @@ socket_multicast_enable(
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if (setsockopt(iface->fd, IPPROTO_IPV6,
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IPV6_JOIN_GROUP, (char *)&mreq6,
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sizeof(mreq6))) {
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- msyslog(LOG_ERR,
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+ DPRINTF(2, (
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"setsockopt IPV6_JOIN_GROUP failed: %m on socket %d, addr %s for interface %u (%s)",
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iface->fd, stoa(&iface->sin),
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- mreq6.ipv6mr_interface, stoa(maddr));
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+ mreq6.ipv6mr_interface, stoa(maddr)));
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return ISC_FALSE;
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}
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DPRINTF(4, ("Added IPv6 multicast group on socket %d, addr %s for interface %u (%s)\n",
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@@ -2793,11 +2819,6 @@ io_multicast_add(
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"Joined %s socket to multicast group %s",
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stoa(&ep->sin),
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stoa(addr));
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- else
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- msyslog(LOG_ERR,
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- "Failed to join %s socket to multicast group %s",
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- stoa(&ep->sin),
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- stoa(addr));
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}
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add_addr_to_list(addr, one_ep);
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