Wireguard auf Synology NAS - bekomme keine interne IP-Adresse

# Beispieldatei
version: "3.8"  
services:
  wg-easy:
    environment:
      # Required:
      - WG_HOST=meinedyndnsadresse
      - PASSWORD=meinwireguardpasswort

      # Optional:
      #- WG_PORT=51820
      #- WG_DEFAULT_ADDRESS=10.8.0.x
      # WG_DEFAULT_DNS=192.168.1.1
      #- WG_MTU=1420
      # WG_ALLOWED_IPS=192.168.1.0/24, 10.0.1.0/24
      #- WG_PRE_UP=echo "Pre Up" /etc/wireguard/pre-up.txt 
      #- WG_POST_UP=echo "Post Up"  /etc/wireguard/post-up.txt 
      #- WG_PRE_DOWN=echo "Pre Down"  /etc/wireguard/pre-down.txt 
      #- WG_POST_DOWN=echo "Post Down"  /etc/wireguard/post-down.txt 
      # Note the angle brackets/greater then symbols needed to be removed in the above 4 lines because it isn't allowed in YouTube descriptions. 

    image: weejewel/wg-easy
    container_name: wg-easy
    volumes:
      - .:/etc/wireguard
    ports:
      - "51820:51820/udp"  
      - "51821:51821/tcp"  
    restart: unless-stopped
    cap_add:
      - NET_ADMIN
      - SYS_MODULE
    sysctls:
      - net.ipv4.ip_forward=1
      - net.ipv4.conf.all.src_valid_mark=1