如果防火墙不支持自动IPv6到IPv4

# 创建极简脚本
cat > /root/nas-start << 'EOF'
#!/bin/sh
# 极简启动，无日志

# 清理旧的
killall socat 2>/dev/null
sleep 1

# 获取NAS IPv6
NAS_MAC="bc:24:11:39:bc:d9"
NAS_IPV6=$(ip -6 neigh show | grep -i "$NAS_MAC" | grep '240e:' | awk '{print $1}' | head -1)

if [ -n "$NAS_IPV6" ]; then
    # 启动端口转发
    for port in 80 443 5666 3031; do
        socat TCP6-LISTEN:${port},fork,reuseaddr,ipv6only=1 TCP6:[${NAS_IPV6}]:${port} &
    done
fi
EOF

chmod +x /root/nas-start

# NAS IPv6转发
(sleep 50 && /root/nas-start) &

cat > /root/nas-monitor << 'EOF'
#!/bin/sh
# 无日志监控脚本

NAS_MAC="bc:24:11:39:bc:d9"

while true; do
    sleep 300  # 5分钟检查一次
    
    # 检查socat是否在运行
    if ! ps | grep -q "socat TCP6-LISTEN"; then
        # 重新启动
        killall socat 2>/dev/null
        sleep 1
        
        NAS_IPV6=$(ip -6 neigh show | grep -i "$NAS_MAC" | grep '240e:' | awk '{print $1}' | head -1)
        if [ -n "$NAS_IPV6" ]; then
            for port in 80 443 5666 3031; do
                socat TCP6-LISTEN:${port},fork,reuseaddr,ipv6only=1 TCP6:[${NAS_IPV6}]:${port} &
            done
        fi
    fi
done
EOF

chmod +x /root/nas-monitor

# NAS IPv6转发 + 监控
(sleep 50 && /root/nas-start && sleep 10 && /root/nas-monitor) &

# NAS IPv6端口转发
(sleep 50 && killall socat 2>/dev/null; sleep 2; NAS_IPV6=$(ip -6 neigh show | grep -i "bc:24:11:39:bc:d9" | grep '240e:' | awk '{print $1}' | head -1); [ -n "$NAS_IPV6" ] && for port in 80 443 5666 3031; do socat TCP6-LISTEN:${port},fork,reuseaddr,ipv6only=1 TCP6:[${NAS_IPV6}]:${port} & done) &

cat > /root/nas-auto << 'EOF'
#!/bin/sh
# 简洁自动转发

NAS_MAC="bc:24:11:39:bc:d9"
LAST_IP_FILE="/tmp/nas_last_ip"

# 获取当前IP
get_current_ip() {
    ip -6 neigh show | grep -i "$NAS_MAC" | grep '240e:' | awk '{print $1}' | head -1
}

# 主循环
while true; do
    CURRENT_IP=$(get_current_ip)
    LAST_IP=$(cat "$LAST_IP_FILE" 2>/dev/null)
    
    if [ -n "$CURRENT_IP" ] && [ "$CURRENT_IP" != "$LAST_IP" ]; then
        # IP变化，重启转发
        killall socat 2>/dev/null
        sleep 1
        
        for port in 80 443 5666 3031; do
            socat TCP6-LISTEN:${port},fork,reuseaddr,ipv6only=1 TCP6:[${CURRENT_IP}]:${port} &
        done
        
        echo "$CURRENT_IP" > "$LAST_IP_FILE"
    elif [ -z "$CURRENT_IP" ] && [ -f "$LAST_IP_FILE" ]; then
        # NAS可能离线
        rm -f "$LAST_IP_FILE"
    fi
    
    sleep 180  # 3分钟检查一次
done
EOF

chmod +x /root/nas-auto

# NAS自动转发
(sleep 55 && /root/nas-auto) &

cat > /root/nas-ipv6 << 'EOF'
#!/bin/sh
# 简洁NAS IPv6转发
killall socat 2>/dev/null
sleep 1
IP=$(ip -6 neigh show | grep -i "bc:24:11:39:bc:d9" | grep '240e:' | awk '{print $1}' | head -1)
[ -n "$IP" ] && for p in 80 443 5666 3031; do
    socat TCP6-LISTEN:${p},fork,reuseaddr,ipv6only=1 TCP6:[${IP}]:${p} &
done
EOF
chmod +x /root/nas-ipv6

# NAS IPv6转发
(sleep 50 && /root/nas-ipv6) &

# 添加到crontab，每天凌晨3点重启一次转发
echo "0 3 * * * /root/nas-ipv6" >> /etc/crontabs/root
/etc/init.d/cron restart

# 重启后检查
sleep 60
echo "检查端口转发:"
netstat -tln | grep -E ':(80|443|5666|3031)'

echo ""
echo "检查进程:"
ps | grep socat | grep -v grep

# 手动测试
curl -6 -I http://[你的路由器IPv6]:80 2>/dev/null | head -1