Get addresses associated with network interfaces on a system without relying on DNS resolver name lookups. Header-only, requires C++14.

Programming language: C++
Tags: Networking     Header Only     Cross-platform     Library     C++14    

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Get addresses associated with network interfaces on a system without using name lookups. Header-only, requires C++14.


Add the header file to the include path for your project. The main functions for getting interface addresses all return a vector of strings (std::vector<std::string>) with the typical human-readable representation of IP addresses (e.g. for IPv4 and 2001:0db8:85a3:0000:0000:8a2e:0370:7334 for IPv6).

#include "gmlc/netif/NetIF.hpp"

auto addrs_ipv4 = gmlc::netif::getInterfaceAddressesV4(); // Get all IPv4 addresses
auto addrs_ipv6 = gmlc::netif::getInterfaceAddressesV6(); // Get all IPv6 addresses
auto addrs_all = gmlc::netif::getInterfaceAddressesAll(); // Get all addresses (IPv4 and IPv6)

CI Test Status

OS CPU Arch Status
FreeBSD x86_64 Build Status
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macOS 10.14 x86_64 Build Status
Windows 10 x86_64 Build Status


Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change. See [Contributing](CONTRIBUTING) for more details and [Contributors](CONTRIBUTORS) for a list of the current and past contributors to this project.

Please make sure to update tests as appropriate.


NetIF is distributed under the terms of the BSD-3 clause license. All new contributions must be made under this license. See [LICENSE](LICENSE) for more detail.

SPDX-License-Identifier: BSD-3-Clause

Portions of the code written by LLNL with release number LLNL-CODE-739319

*Note that all licence references and agreements mentioned in the NetIF README section above are relevant to that project's source code only.