wireguard-setup/scripts/inner_basic.sh

#!/usr/bin/env bash
wg setconf vpn /snacks/wireguard/wg.conf
ip link set dev vpn up
ip addr flush dev vpn
ip route flush dev vpn

echo "-- <start> inner_basic.sh --"

echo "VPN_IPV4_ADDRESS=${VPN_IPV4_ADDRESS}"
echo "VPN_IPV6_ADDRESS=${VPN_IPV6_ADDRESS}"

echo "-- <end> inner_basic.sh --"

if [ -n "${VPN_IPV4_ADDRESS}" ]
then
    ip addr add ${VPN_IPV4_ADDRESS} dev vpn
fi

if [ -n "${VPN_IPV6_ADDRESS}" ]
then
    ip addr add ${VPN_IPV6_ADDRESS} dev vpn
fi

if [ -n "${VPN_IPV4_ADDRESS}" ]
then
    ip -4 route add default dev vpn
fi

if [ -n "${VPN_IPV6_ADDRESS}" ]
then
    ip -6 route add default dev vpn
fi