1 files changed, 8 insertions, 4 deletions

diff --git a/examples/udhcp/simple.script b/examples/udhcp/simple.script
index 40ee73822..d42f2d3d5 100755
--- a/examples/udhcp/simple.script
+++ b/examples/udhcp/simple.script
@@ -34,13 +34,17 @@ case "$1" in
                 fi
 
                 echo "Recreating $RESOLV_CONF"
-                echo -n > $RESOLV_CONF-$$
-                [ -n "$domain" ] && echo "search $domain" >> $RESOLV_CONF-$$
+                # If the file is a symlink somewhere (like /etc/resolv.conf
+                # pointing to /run/resolv.conf), make sure things work.
+                realconf=$(realpath "$RESOLV_CONF" 2>/dev/null || echo "$RESOLV_CONF")
+                tmpfile="$realconf-$$"
+                > "$tmpfile"
+                [ -n "$domain" ] && echo "search $domain" >> "$tmpfile"
                 for i in $dns ; do
                         echo " Adding DNS server $i"
-                        echo "nameserver $i" >> $RESOLV_CONF-$$
+                        echo "nameserver $i" >> "$tmpfile"
                 done
-                mv $RESOLV_CONF-$$ $RESOLV_CONF
+                mv "$tmpfile" "$realconf"
                 ;;
 esac