liblpm. A high-performance C library for Longest Prefix Match (LPM) lookups, supporting both a multi-bit trie of 8-bit stride for IPv4 and a wide multi-level 16-bit stride for IPv6, featuring runtime dynamic SIMD dispatching (SSE2, SSE4.2, AVX, AVX2, AVX512F) for optimal performance and throughput on any CPU architecture.