resolv.conf.5: Document use-vc option added to glibc 2.14

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>
This commit is contained in:
Stéphane Aulery 2015-04-22 02:21:09 +02:00 committed by Michael Kerrisk
parent 7f4f24eaf1
commit 7d9f4717fd
1 changed files with 7 additions and 0 deletions

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@ -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.