.vpn/up

#!/bin/bash
# script to automatically set DNS information on connection

mv -v /etc/resolv.conf /etc/resolv.conf.hold # back up old file

for OPTION in ${!foreign_option_*} ;
do
        [ -z "${!OPTION}" ] && break
        if [ -n "$(echo ${!OPTION} | egrep -e '^dhcp-option (DOMAIN|DNS)')" ]; then
                echo ${!OPTION} | sed \
            -e 's/dhcp-option DOMAIN/search/g' \
            -e 's/dhcp-option DNS/nameserver/g' \
            >> /etc/resolv.conf
        fi
done

if [ ! -f /etc/resolv.conf ]; then # openvpn did not set any DNS information
        mv -v /etc/resolv.conf.hold /etc/resolv.conf
fi