From a3204225884ba63aee94db345d5c38f1c872d6b7 Mon Sep 17 00:00:00 2001
From: Xunlei Pang <xlpang@redhat.com>
Date: Tue, 26 Apr 2016 18:05:11 +0800
Subject: [PATCH] network/net-lib.sh: delete duplicated DNS items from
 "/etc/resolv.conf"

Users can pass the DNS information throught "nameserver=" cmdline,
there maybe duplicated inputs.

"/etc/resolv.conf" have some restrictions on the number of DNS items
effective, so make sure that this file contains no duplicated items.

We achieve this by simply making the file have no duplicated lines.

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
(cherry picked from commit 4fa5c235a76c085f5958002826436ed9c40e5034)
---
 modules.d/40network/module-setup.sh | 2 +-
 modules.d/40network/net-lib.sh      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules.d/40network/module-setup.sh b/modules.d/40network/module-setup.sh
index 75ce6224..de353674 100755
--- a/modules.d/40network/module-setup.sh
+++ b/modules.d/40network/module-setup.sh
@@ -69,7 +69,7 @@ installkernel() {
 
 install() {
     local _arch _i _dir
-    inst_multiple ip arping dhclient sed
+    inst_multiple ip arping dhclient sed awk
     inst_multiple -o ping ping6
     inst_multiple -o brctl
     inst_multiple -o teamd teamdctl teamnl
diff --git a/modules.d/40network/net-lib.sh b/modules.d/40network/net-lib.sh
index 92154cc6..e6942a55 100755
--- a/modules.d/40network/net-lib.sh
+++ b/modules.d/40network/net-lib.sh
@@ -121,7 +121,7 @@ setup_net() {
     [ -e /tmp/dhclient.$netif.dhcpopts ] && . /tmp/dhclient.$netif.dhcpopts
     # set up resolv.conf
     [ -e /tmp/net.$netif.resolv.conf ] && \
-        cp -f /tmp/net.$netif.resolv.conf /etc/resolv.conf
+        awk '!array[$0]++' /tmp/net.$netif.resolv.conf > /etc/resolv.conf
     [ -e /tmp/net.$netif.gw ]            && . /tmp/net.$netif.gw
 
     # add static route