: As of April 2026, it remains an active Internet-Draft within the IETF, with reference implementations available for Linux (TCP) and Apple (QUIC). 2. Prague, Czech Republic: Travel & Culture
: Implements a "virtual RTT" to prevent flows with very low Round-Trip Times from dominating others. Prague
: Requires a more granular feedback mechanism than standard TCP to react to the extent of congestion rather than just its existence . : As of April 2026, it remains an
: To maintain consistently low queuing delay (on the order of milliseconds) while fully utilizing network capacity. Key Features : : As of April 2026
: Sources must set the ECT(1) codepoint in the IP header to identify as L4S-capable.