From 7d9f4717fde0c60a07f5ce61cc0001a56b631bea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Aulery?= <saulery@free.fr>
Date: Wed, 22 Apr 2015 02:21:09 +0200
Subject: [PATCH] resolv.conf.5: Document use-vc option added to glibc 2.14
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Fix Ubuntu bug #1110781:
https://bugs.launchpad.net/ubuntu/+source/manpages/+bug/1110781

Reported-by: Thomas Hood <jdthood@gmail.com>
Signed-off-by: Stéphane Aulery <saulery@free.fr>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man5/resolv.conf.5 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/man5/resolv.conf.5 b/man5/resolv.conf.5
index f5c8cad6c..7b6804a92 100644
--- a/man5/resolv.conf.5
+++ b/man5/resolv.conf.5
@@ -272,6 +272,13 @@ as if it were a top level domain (TLD).
 This option can cause problems if the site has ``localhost'' as a TLD
 rather than having localhost on one or more elements of the search list.
 This option has no effect if neither RES_DEFNAMES or RES_DNSRCH is set.
+.TP
+.BR use-vc " (since glibc 2.14)"
+sets
+.BR RES_USEVC
+in
+.IR _res.options .
+This option forces the usage of TCP for DNS resolutions.
 .RE
 .LP
 The \fIdomain\fP and \fIsearch\fP keywords are mutually exclusive.