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| author | Sergey Bugaev <bugaevc@gmail.com> | 2021-02-15 18:18:34 +0100 |
|---|---|---|
| committer | Sergey Bugaev <bugaevc@gmail.com> | 2021-03-31 11:54:08 +0200 |
| commit | 84b0ff0e327a4cf873791c74efc312c81400be70 (patch) | |
| tree | 129bf347b42c4e3c9747b5b120f3c4dcedc02221 /src/resolve/resolved-dns-scope.c | |
| parent | resolved: fix mistaking QU bit for cache-flush bit (diff) | |
| download | systemd-84b0ff0e327a4cf873791c74efc312c81400be70.tar.xz systemd-84b0ff0e327a4cf873791c74efc312c81400be70.zip | |
resolved: reply using unicast mDNS when appropriate
Fixes https://github.com/systemd/systemd/issues/18434
Diffstat (limited to 'src/resolve/resolved-dns-scope.c')
| -rw-r--r-- | src/resolve/resolved-dns-scope.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c index 09f25a65b9..81c62bdca6 100644 --- a/src/resolve/resolved-dns-scope.c +++ b/src/resolve/resolved-dns-scope.c @@ -287,17 +287,23 @@ static int dns_scope_emit_one(DnsScope *s, int fd, int family, DnsPacket *p) { return -EBUSY; if (family == AF_INET) { - addr.in = MDNS_MULTICAST_IPV4_ADDRESS; + if (in4_addr_is_null(&p->destination.in)) + addr.in = MDNS_MULTICAST_IPV4_ADDRESS; + else + addr = p->destination; fd = manager_mdns_ipv4_fd(s->manager); } else if (family == AF_INET6) { - addr.in6 = MDNS_MULTICAST_IPV6_ADDRESS; + if (in6_addr_is_null(&p->destination.in6)) + addr.in6 = MDNS_MULTICAST_IPV6_ADDRESS; + else + addr = p->destination; fd = manager_mdns_ipv6_fd(s->manager); } else return -EAFNOSUPPORT; if (fd < 0) return fd; - r = manager_send(s->manager, fd, s->link->ifindex, family, &addr, MDNS_PORT, NULL, p); + r = manager_send(s->manager, fd, s->link->ifindex, family, &addr, p->destination_port ?: MDNS_PORT, NULL, p); if (r < 0) return r; |