Package: ntp Version: 1:4.2.6+dfsg-1 Tags: ipv6, upstream, patch Hello,
playing with ntp ipv6 multicast, I discovered that ntp just doesn't detect multicast capabilities for ipv6 interfaces, reverting the the unspecified (::) address for sending packets, which the kernel does not allow (it does not make sense anyway). The following patch is basically a rewrite of https://support.ntp.org/bugs/attachment.cgi?id=296, belonging to https://support.ntp.org/bugs/show_bug.cgi?format=multiple&id=715 supposed to be fixed in 2006. (Deja-vu-Bug) Management Summary: Makes ntp.conf line broadcast ff05::101 work. Please consider adding. Bye, Joerg --- lib/isc/unix/interfaceiter.c.orig 2010-06-07 17:12:55.000000000 +0200 +++ lib/isc/unix/interfaceiter.c 2010-06-07 17:28:48.000000000 +0200 @@ -185,8 +185,10 @@ linux_if_inet6_current(isc_interfaceiter_t *iter) { char address[33]; char name[IF_NAMESIZE+1]; + char strbuf[ISC_STRERRORSIZE]; struct in6_addr addr6; - int ifindex, prefix, flag3, flag4; + int ifindex, prefix, scope, flags; + struct ifreq ifreq; int res; unsigned int i; @@ -200,7 +202,7 @@ } res = sscanf(iter->entry, "%32[a-f0-9] %x %x %x %x %16s\n", - address, &ifindex, &prefix, &flag3, &flag4, name); + address, &ifindex, &prefix, &scope, &flags, name); if (res != 6) { isc_log_write(isc_lctx, ISC_LOGCATEGORY_GENERAL, ISC_LOGMODULE_INTERFACE, ISC_LOG_ERROR, @@ -222,7 +224,34 @@ addr6.s6_addr[i] = byte; } iter->current.af = AF_INET6; - iter->current.flags = INTERFACE_F_UP; + iter->current.flags = 0; + memset(&ifreq, 0, sizeof(ifreq)); + INSIST(sizeof(ifreq.ifr_name) <= sizeof(iter->current.name)); + strncpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name)); + + if (ioctl(iter->socket, SIOCGIFFLAGS, (char *) &ifreq) < 0) { + isc__strerror(errno, strbuf, sizeof(strbuf)); + UNEXPECTED_ERROR(__FILE__, __LINE__, + "%s: getting interface flags: %s", + ifreq.ifr_name, strbuf); + return (ISC_R_IGNORE); + } + + if ((ifreq.ifr_flags & IFF_UP) != 0) + iter->current.flags |= INTERFACE_F_UP; +#ifdef IFF_POINTOPOINT + if ((ifreq.ifr_flags & IFF_POINTOPOINT) != 0) + iter->current.flags |= INTERFACE_F_POINTTOPOINT; +#endif + if ((ifreq.ifr_flags & IFF_LOOPBACK) != 0) + iter->current.flags |= INTERFACE_F_LOOPBACK; + if ((ifreq.ifr_flags & IFF_BROADCAST) != 0) + iter->current.flags |= INTERFACE_F_BROADCAST; +#ifdef IFF_MULTICAST + if ((ifreq.ifr_flags & IFF_MULTICAST) != 0) + iter->current.flags |= INTERFACE_F_MULTICAST; +#endif + isc_netaddr_fromin6(&iter->current.address, &addr6); if (isc_netaddr_islinklocal(&iter->current.address)) { isc_netaddr_setzone(&iter->current.address,
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