From: Rachid Koucha <47061324+Rachid-Koucha@users.noreply.github.com>
Date: Sun, 27 Jan 2019 12:46:48 +0000 (+0100)
Subject: /etc/resolv.conf grows indefinitely
X-Git-Tag: lxc-3.2.0~175^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=567f8915962316dfee3b040bad404da7cdcbbe38;p=thirdparty%2Flxc.git

/etc/resolv.conf grows indefinitely

This file grows indefinitely : upon each DHCP lease renew,
the "nameserver ..dns..." line is added at the end of the file.
Make a "grep" in the file to make sure that the same line
does not already exist.

Signed-off-by: Rachid Koucha <rachid.koucha@gmail.com>
---

diff --git a/templates/lxc-busybox.in b/templates/lxc-busybox.in
index 2171e2d59..3782687a5 100644
--- a/templates/lxc-busybox.in
+++ b/templates/lxc-busybox.in
@@ -164,7 +164,10 @@ case "\$1" in
 
     [ -n "\$domain" ] && echo search \$domain > /etc/resolv.conf
     for i in \$dns ; do
-      echo nameserver \$i >> /etc/resolv.conf
+      grep "nameserver \$i" /etc/resolv.conf > /dev/null 2>&1
+      if [ \$? -ne 0 ]; then
+        echo nameserver \$i >> /etc/resolv.conf
+      fi
     done
     ;;
 esac