Louis Navarre
Louis Navarre has been a researcher at INL since September 2016 and is currently in his final year of PhD. His research focuses on the transport layer, especially the QUIC protocol and multicasting to improve the scalability of Internet communication.
His main work under the supervision of Prof. Olivier Bonaventure consists of extending QUIC and Multipath QUIC to support multicast at the transport layer. The extension, Flexicast QUIC, enables applications to efficiently deliver data using an underlying multicast network and per-receiver unicast paths to handle acknowledgments, retransmissions, and fallback when multicast fails or is unavailable. The paper was published in the ACM SIGCOMM CCR in April 2025. Louis placed second in the Student Research Competition at SIGCOMM 2025 for its initial deployment of Flexicast QUIC on the Internet with Automatic Multicast Tunneling.
On the side, Louis investigated the Optimistic Acknowledgment Attack in QUIC, showing that despite its mention and the design of a protection mechanism in QUIC’s specification, most existing open-source QUIC stacks did not support it and were vulnerable to the attack. This work was published in ANRW 2024 and led to several fixes in major implementations, including xQUIC, quiche, and msquic. Cloudflare published a blog post about it.
Louis also worked on Forward Erasure Correction at the network layer to provide transparent, high-speed protection for upper-layer protocols. This work was published in ICNP in 2024.
Publications
Towards an Internet Deployment of Flexible Multicast QUIC
SIGCOMM 25: Proceedings of the SIGCOMM 25 Poster and Demo Sessions
MAY is not enough! QUIC servers should skip packet numbers
ANRW 25: Proceedings of the 2025 Applied Networking Research Workshop
Taking the Best of Multicast and Unicast with Flexicast QUIC
ACM SIGCOMM Computer Communication Review, Volume 55, Issue 2
A High-Speed Robust Tunnel Using Forward Erasure Correction in Segment Routing
2024 IEEE 32nd International Conference on Network Protocols (ICNP)
On Integrating eBPF into Pluginized Protocols
ACM SIGCOMM Computer Communication Review, Volume 53, Issue 3
The multiple roles that IPv6 addresses can play in today's internet
ACM SIGCOMM Computer Communication Review, Volume 52, Issue 3
Revealing the evolution of a cloud provider through its network weather map
IMC 22: Proceedings of the 22nd ACM Internet Measurement Conference
It Is Time to Reconsider Multicast
IAB workshop on Environmental Impact of Internet Applications and Systems
Leveraging eBPF to make TCP path-aware
IEEE Transactions on Network and Service Management, Volume 19, Issue 3
Experimenting with bit index explicit replication
Proceedings of the 3rd International CoNEXT Student Workshop