OpenVPN commandline with NetworkManager and internal DNS

openvpn_up.sh

#!/bin/sh                                                                                      

nameserver=$(env |  perl -anE 'print $F[-1] if /foreign_option.*DNS/')                         
if [ "$nameserver" ]; then                                                                     
  #echo "nameserver $nameserver" | resolvconf -a $dev                                          
  nmcli con modify $dev +ipv4.dns $nameserver                                                  
fi                                                                                             

domain=$(env |  perl -anE 'print $F[-1] if /foreign_option.*DOMAIN/')                          
if [ "$nameserver" ] && [ "$domain" ]; then                                                    
  org_dns=$(nmcli -t -f uuid c show --active | while read uuid; do                             
    nmcli -t -f IP4.DNS c show $uuid | cut -f2 -d:                                             
  done | tail -1                                                                               
  )                                                                                            

  nmcli con modify $dev +ipv4.dns-search $domain                                               
  qdbus --system org.freedesktop.NetworkManager.dnsmasq /uk/org/thekelleys/dnsmasq SetDomainServers "(" "$org_dns" "/$domain/$nameserver" ")"                                                 
fi                                                                                             

exit 0