Achieving QUIC's Full Potential - How a DNS Deployment Gap Is Limiting HTTP/3 Performance

Learn how DNS deployment gaps are preventing QUIC and HTTP/3 from reaching their full performance potential in this 32-minute conference presentation from NANOG. Discover the network overhead challenges created by the growing complexity of modern web browsing, including the cascade of sequential handshakes required for DNS resolution, TLS setup, and protocol negotiation that can cause substantial latency before content delivery begins. Explore how newly standardized DNS HTTPS records (RFC 9460) can significantly reduce this overhead and understand the missing link between browser capabilities and web server configurations that prevents full realization of QUIC/HTTP/3 benefits. Examine practical solutions through demonstrations of the open-source WebTrafficSphere tool and the apexDNS proof-of-concept, which show how to transparently deliver necessary endpoint information to browsers while bypassing unnecessary negotiation and reducing packet exchanges by up to 50%. Gain insights into network security and privacy considerations for secure and trustworthy future communication networks, presented by Senior Scientist Levente Csikor from the Institute for Infocomm Research (I²R), A*STAR, Singapore.