Настройка IPv6 в OpenVPN

#!/bin/bash
 
INTERFACE=$1; shift;
TUN_MTU=$1;   shift;
UDP_MTU=$1;   shift;
LOCAL_IP=$1;  shift;
REMOTE_IP=$1; shift;
MODUS=$1;     shift;
 
ip link set $INTERFACE up
ip link set mtu $TUN_MTU dev $INTERFACE
 
. /etc/openvpn/$INTERFACE.ipv6
 
for I in $LOCAL_IP6; do
  ip -6 addr add $I dev $INTERFACE
done
 
for R in $ROUTE_IP6; do
  ip -6 route add $R dev $INTERFACE
done
 
exit 0

lport 1194
proto udp6
dev vpn-branch
dev-type tun
tun-ipv6
secret vpn-hq.key
script-security 2
up /etc/openvpn/up-ipv6.sh

LOCAL_IP6=2001:470:xxxx:1::1/64

remote hq.example.com 1194
proto udp6
dev vpn-hq
dev-type tun
tun-ipv6
secret vpn-hq.key
script-security 2
up /etc/openvpn/up-ipv6.sh

LOCAL_IP6=2001:470:xxxx:1::2/64
ROUTE_IP6=2001:470:xxxx::/48