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DacatDHCP
What it is
DacatDHCP pairs an IPv4 DHCP service with a web interface for configuring address pools, viewing leases, and monitoring service status. The service and management interface are bundled in a lightweight, single-file application. Configuration includes network-interface selection, address ranges, gateway, DNS, and lease duration. The interface shows assigned addresses and client information; the v1.0.0 release adds fixed MAC-to-IP mappings and matching logs. The main version supports Windows 10, Windows 11, and Windows Server 2016 or later on Windows amd64. Its management interface works in Edge, Chrome, and other modern Chromium-based browsers, but not Internet Explorer 11. It listens only on 127.0.0.1, and write endpoints use CSRF and origin checks. Administrator privileges are required to run it. DacatDHCP is permanently free and open source under the Apache License 2.0. It is intended for labs, test environments, temporary LANs, small networks, troubleshooting, and isolated networks. Address pools must match the selected interface's subnet; leases are not restored after restart, and active IP-conflict detection is not provided.
For and against
For
- Bundles the DHCP service and web interface in one file.
- Configures gateways, DNS, ranges, and lease duration.
- Displays leases and client information.
- Permanently free under Apache License 2.0.
Against
- Requires administrator privileges.
- Does not support IPv6 or DHCPv6.
- Leases are not restored after restart.
- Address pools must match the interface subnet.
The verdict
DacatDHCP provides a focused, free DHCP service and local management interface for Windows environments. Its IPv4-only scope, subnet requirement, and lack of lease persistence are important limits to consider.
Who it suits
It may suit Windows users managing IPv4 DHCP in labs, temporary LANs, small networks, or isolated environments. It is also described for device troubleshooting and test environments.
Plans and prices
Official version
Windows amd64 · IPv4 DHCP only · local DHCP service
Read 4 Oct 2026 · github.com
On the record
- Browser support
- The management interface supports Microsoft Edge, Google Chrome, and other modern Chromium-based browsers; Internet Explorer 11 is no longer supported.github.com · read 4 Oct 2026
- Deployment
- It is delivered as a lightweight single-file application with its service and management interface bundled together.dacat.cc · read 4 Oct 2026
- Features
- It supports network-interface selection and configuration of address ranges, gateway, DNS, and lease duration.dacat.cc · read 4 Oct 2026
- Intended use
- The maker describes it for labs, test environments, temporary LANs, small networks, device troubleshooting, and isolated networks.dacat.cc · read 4 Oct 2026
- Lease management
- The interface can show assigned addresses and client information, and the latest release adds MAC-to-IP fixed mappings with matching logs.github.com · read 4 Oct 2026
- Lease persistence
- The v1.0.0 release notes say leases are held in memory and are not restored after restart, and that active IP-conflict detection is not provided.github.com · read 4 Oct 2026
- License
- The v1.0.0 release is published under the Apache License 2.0.github.com · read 4 Oct 2026
- Limits
- It focuses on IPv4 DHCP and does not currently support IPv6 or DHCPv6.github.com · read 4 Oct 2026
- Network scope
- The address pool must be in the same subnet as the selected network interface; the product does not support cross-subnet address pools.github.com · read 4 Oct 2026
- Permissions
- Running the application requires administrator privileges.github.com · read 4 Oct 2026
- Platform
- The main version supports Windows 10, Windows 11, and Windows Server 2016 or later, with Windows amd64 releases.dacat.cc · read 4 Oct 2026
- Purpose
- DacatDHCP combines a DHCP service with a web management interface for configuring address pools, viewing leases, and monitoring service status.dacat.cc · read 4 Oct 2026
- Security
- The management interface listens only on 127.0.0.1, and write endpoints use CSRF and origin checks.github.com · read 4 Oct 2026
- Support and source
- The maker directs users to GitHub for source code, releases, documentation, and issue feedback.dacat.cc · read 4 Oct 2026
