add comment about +trace and @server

diff --git a/bin/dig/dig.docbook b/bin/dig/dig.docbook
index 502802cd1d9c3df17d92300696476b69f2d1fdab..699afe5a5d8a8260212a248e06549a15f4439419 100644 (file)
--- a/bin/dig/dig.docbook
+++ b/bin/dig/dig.docbook
@@ -1066,6 +1066,9 @@
              resolve the name being looked up.  It will follow
              referrals from the root servers, showing the answer
              from each server that was used to resolve the lookup.
+           </para> <para>
+             If @server is also specified, it affects only the
+             initial query for the root zone name servers.
            </para> <para>
              <command>+dnssec</command> is also set when +trace
              is set to better emulate the default queries from a