add comment

(cherry picked from commit f45818b82ab3f9ba4e946373c397bf4b2ee306cd)

diff --git a/lib/dns/resolver.c b/lib/dns/resolver.c
index e21d97e1e66b8285e95c99fee587eaf720a2f125..e63a932dad9a29b863f4c3bb36d4eca1ec6c8772 100644 (file)
--- a/lib/dns/resolver.c
+++ b/lib/dns/resolver.c
@@ -1132,6 +1132,10 @@ log_edns(fetchctx_t *fctx) {
        if (fctx->reason == NULL)
                return;
 
+       /*
+        * We do not know if fctx->domain is the actual domain the record
+        * lives in or a parent domain so we have a '?' after it.
+        */
        dns_name_format(&fctx->domain, domainbuf, sizeof(domainbuf));
        isc_log_write(dns_lctx, DNS_LOGCATEGORY_EDNS_DISABLED,
                      DNS_LOGMODULE_RESOLVER, ISC_LOG_INFO,