dnssd: don't advertise subtype PTRs to the browsing domain

[thirdparty/systemd.git] / src / resolve / resolved-dns-scope.c

diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c
index b1ae36e3909c96cd41e7b554213955e735c2a58c..17bc8231962c78ea07706c2b8bf81d1ff85f3fcc 100644 (file)
--- a/src/resolve/resolved-dns-scope.c
+++ b/src/resolve/resolved-dns-scope.c
@@ -1504,9 +1504,10 @@ int dns_scope_announce(DnsScope *scope, bool goodbye) {
                         continue;
                 }
 
-                /* Collect service types for _services._dns-sd._udp.local RRs in a set */
+                /* Collect service types for _services._dns-sd._udp.local RRs in a set. Only two-label names
+                 * (not selective names) are considered according to RFC6763 § 9. */
                 if (!scope->announced &&
-                    dns_resource_key_is_dnssd_ptr(z->rr->key)) {
+                    dns_resource_key_is_dnssd_two_label_ptr(z->rr->key)) {
                         if (!set_contains(types, dns_resource_key_name(z->rr->key))) {
                                 r = set_ensure_put(&types, &dns_name_hash_ops, dns_resource_key_name(z->rr->key));
                                 if (r < 0)