version: '3.8'
services:
  nat-gateway:
    build: .
    container_name: nat-gateway
    cap_add:
      - NET_ADMIN
      - SYS_MODULE
    privileged: true
    ports:
      - "51820:51820/udp"
    volumes:
      - /lib/modules:/lib/modules:ro
    sysctls:
      - net.ipv4.ip_forward=1
      - net.ipv6.conf.all.forwarding=1
    networks:
      natnet:
        ipv4_address: 172.28.0.2
    restart: unless-stopped

networks:
  natnet:
    driver: bridge
    ipam:
      config:
        - subnet: 172.28.0.0/16