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IPv6 ULA生成器
MAC地址

生成结果

关于IPv6 ULA

IPv6唯一本地地址(ULA)是RFC 4193定义的IPv6地址类型，用于本地通信，不可在全球互联网上路由。

RFC 4193标准

RFC 4193定义了IPv6唯一本地地址的格式和生成方法，确保地址的唯一性和本地性。

MAC地址说明

MAC地址是网络设备的唯一标识符，用于生成ULA地址的随机部分。

Professional IPv6 ULA Generator - Enterprise-Grade RFC4193 Compliant Tool

Product Overview

Professional IPv6 ULA Generator is an enterprise-grade network tool designed specifically for network engineers, IT professionals, and enterprise network administrators. This RFC4193-compliant IPv6 Unique Local Address (ULA) generator provides secure, reliable, and standards-based local IPv6 addressing solutions for modern network infrastructure.
Our tool implements the IETF-recommended algorithm combining current timestamp, MAC address, and SHA1 hash to generate cryptographically secure, globally unique local IPv6 addresses that are perfect for enterprise network planning, IPv6 migration projects, and network security implementations.

Core Features & Capabilities

🔧 Core Generation Functions

  • RFC4193 Compliance - Fully compliant with RFC4193 standard for IPv6 Unique Local Addresses
  • IETF Algorithm Implementation - Uses recommended method combining timestamp, MAC address, and SHA1 hash
  • Secure ULA Generation - Generates cryptographically secure 40-bit random identifiers
  • MAC Address Validation - Intelligent format checking and error prevention
  • Subnet Calculation - Automatic first and last subnet block calculation
  • Real-time Processing - Instant generation with immediate results display

🚀 Advanced Features

  • Multiple MAC Formats - Supports colon (:) and hyphen (-) separated formats
  • One-Click Copy - Instant clipboard copy for any generated result
  • Example Templates - Quick-fill MAC address examples for testing
  • Error Handling - Comprehensive validation with clear error messages
  • Mobile Responsive - Perfect functionality across all devices
  • Privacy Focused - All processing done locally in your browser

Use Cases & Applications

Enterprise Network Engineers

  • IPv6 Migration Planning - Generate ULA addresses for smooth IPv4 to IPv6 transition
  • Network Segmentation - Create isolated local IPv6 networks for security
  • Multi-site Connectivity - Design consistent addressing schemes across locations
  • Network Documentation - Generate standardized ULA prefixes for documentation

IT Professionals & System Administrators

  • Server Configuration - Assign local IPv6 addresses to internal servers
  • VLAN Design - Implement IPv6 addressing for virtual LANs
  • Security Implementation - Use ULA for internal-only communication
  • Network Testing - Generate test addresses for lab environments

Network Security Applications

  • Internal Communication - Secure local-only IPv6 addressing
  • Network Isolation - Create non-routable address spaces
  • Access Control - Implement address-based security policies
  • Compliance Requirements - Meet RFC4193 standards for local addressing

How to Use

Step 1: Enter MAC Address

Input your device's MAC address in either format:
  • Colon format: 20:37:06:12:34:56
  • Hyphen format: 20-37-06-12-34-56

Step 2: Generate ULA Address

Click the "Generate ULA Address" button to create your unique local IPv6 address using:
  • Current timestamp for uniqueness
  • Your MAC address for device identification
  • SHA1 hash for cryptographic security
  • RFC4193 compliant formatting

Step 3: Review Results

The tool displays comprehensive information:
  • ULA Prefix: Your unique fd00::/8 prefix
  • First Subnet: Starting subnet block (::0/64)
  • Last Subnet: Ending subnet block (::ffff/64)
  • Copy Function: One-click copy for each result

Step 4: Implement in Network

Use the generated ULA addresses in your:
  • Router configurations
  • Server network settings
  • VLAN implementations
  • Network documentation

Technical Specifications

RFC4193 Standard Compliance

  • Address Format: fd00::/8 prefix for Unique Local Addresses
  • Global ID: 40-bit cryptographically generated identifier
  • Subnet ID: 16-bit subnet identifier (0000-FFFF)
  • Interface ID: 64-bit interface identifier

Algorithm Implementation

  • Hash Function: SHA1 cryptographic hash
  • Timestamp: Current Unix timestamp for uniqueness
  • MAC Integration: Device MAC address for identification
  • Bit Selection: Lower 40 bits for global ID generation

Supported Formats

  • MAC Address Input: Colon (:) and hyphen (-) separated
  • Output Format: Standard IPv6 colon-hexadecimal notation
  • Subnet Range: Complete /48 to /64 subnet calculations

Generation Examples

Example 1: Enterprise Server

Input MAC: 00:1A:2B:3C:4D:5E
  • ULA Prefix: fd12:3456:789a::/48
  • First Subnet: fd12:3456:789a:0000::/64
  • Last Subnet: fd12:3456:789a:ffff::/64
  • Use Case: Internal server addressing

Example 2: VLAN Implementation

Input MAC: AA:BB:CC:DD:EE:FF
  • ULA Prefix: fdab:cdef:1234::/48
  • First Subnet: fdab:cdef:1234:0000::/64
  • Last Subnet: fdab:cdef:1234:ffff::/64
  • Use Case: Isolated VLAN addressing

Example 3: Lab Environment

Input MAC: 12:34:56:78:9A:BC
  • ULA Prefix: fd56:789a:bcde::/48
  • First Subnet: fd56:789a:bcde:0000::/64
  • Last Subnet: fd56:789a:bcde:ffff::/64
  • Use Case: Testing and development

Frequently Asked Questions

What are IPv6 Unique Local Addresses (ULA)?

Answer: ULA are IPv6 addresses defined by RFC4193 for local communication within a site or organization. They are not routable on the global Internet, similar to IPv4 private addresses (192.168.x.x, 10.x.x.x).

Why use ULA instead of link-local addresses?

Answer: ULA addresses are routable within your local network infrastructure, unlike link-local addresses which are only valid on a single network segment. ULA provides better scalability for enterprise networks.

How does the generation algorithm ensure uniqueness?

Answer: The algorithm combines current timestamp (ensuring temporal uniqueness) with MAC address (device uniqueness) and applies SHA1 hash for cryptographic randomness, making collision probability extremely low.

Can I use these addresses on the Internet?

Answer: No, ULA addresses are designed for local use only and should not be routed on the global Internet. They provide internal connectivity while maintaining network security.

Is my data secure when using this tool?

Answer: Yes! All calculations are performed locally in your browser. No MAC addresses or generated ULA prefixes are transmitted to our servers.

What's the difference between ULA and Global Unicast addresses?

Answer: ULA addresses (fd00::/8) are for local use only, while Global Unicast addresses are routable on the Internet. ULA provides privacy and security for internal networks.

Related Network Tools

  • IPv6 Subnet Calculator - Calculate IPv6 subnets and addressing
  • IPv4 to IPv6 Converter - Convert between IPv4 and IPv6 formats
  • MAC Address Generator - Generate random MAC addresses for testing
  • Network Scanner - Scan and analyze IPv6 network ranges
  • IPv6 Address Validator - Validate IPv6 address formats

Technical Support & Standards

This tool is built according to:
  • RFC4193: Unique Local IPv6 Unicast Addresses
  • RFC4291: IP Version 6 Addressing Architecture
  • IETF Guidelines: Internet Engineering Task Force recommendations

For technical questions, feature requests, or bug reports, please contact our development team or visit our support documentation.
Start generating your IPv6 ULA addresses now! This professional-grade tool provides everything you need for secure, standards-compliant local IPv6 addressing. Perfect for network engineers, IT professionals, and anyone implementing IPv6 in enterprise environments.