From: Otto <otto.moerbeek@open-xchange.com>
Date: Wed, 3 Mar 2021 12:51:45 +0000 (+0100)
Subject: As suggested by @rgacogne and verified by myself v6 actually does have TFO.
X-Git-Tag: rec-4.5.0-beta1^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6929e220884a3f8ebd3ae70b405d0c20d94850cd;p=thirdparty%2Fpdns.git

As suggested by @rgacogne and verified by myself v6 actually does have TFO.
---

diff --git a/pdns/lwres.cc b/pdns/lwres.cc
index 1d981fede8..af5f651513 100644
--- a/pdns/lwres.cc
+++ b/pdns/lwres.cc
@@ -327,8 +327,7 @@ LWResult::Result asyncresolve(const ComboAddress& ip, const DNSName& domain, int
       Socket s(ip.sin4.sin_family, SOCK_STREAM);
 
       s.setNonBlocking();
-      // v6 tcp does not seem to have fast open
-      if (ip.sin4.sin_family == AF_INET && SyncRes::s_tcp_fast_open_connect) {
+      if (SyncRes::s_tcp_fast_open_connect) {
         try {
           s.setFastOpenConnect();
         }