%0 Journal Article %A Kempf, Marcel %A Tietz, Simon %A Jaeger, Benedikt %A Späth, Johannes %A Carle, Georg %A Zirngibl, Johannes %+ External Organizations External Organizations External Organizations External Organizations External Organizations Internet Architecture, MPI for Informatics, Max Planck Society %T QUIC Steps: Evaluating Pacing Strategies in QUIC Implementations : %G eng %U http://hdl.handle.net/21.11116/0000-0011-6BD9-1 %R 10.1145/3730985 %7 2025 %D 2025 %J Proceedings of the ACM on Networking %O PACMNET %V 3 %N CoNEXT2 %& 1 %P 1 - 14 %Z sequence number: 13 %I ACM %C New York, NY %@ false %B The 21st International Conference on emerging Networking EXperiments and Technologies %O CoNEXT 2025 HKUST, Hong Kong, December 1-4, 2025

%0 Journal Article %A Sattler, Patrick %A Zirngibl, Johannes %A Hilal, Fahad %A Gasser, Oliver %A Vermeulen, Kevin %A Carle, Georg %A Jonker, Mattijs %+ External Organizations Internet Architecture, MPI for Informatics, Max Planck Society Internet Architecture, MPI for Informatics, Max Planck Society External Organizations External Organizations External Organizations External Organizations %T ECSeptional DNS Data: Evaluating Nameserver ECS Deployments with Response-Aware Scanning : %G eng %U http://hdl.handle.net/21.11116/0000-0011-117E-D %R 10.1145/3730977 %7 2025 %D 2025 %J Proceedings of the ACM on Networking %O PACMNET %V 3 %N CoNEXT2 %& 1 %P 1 - 25 %Z sequence number: 11 %I ACM %C New York, NY %@ false %B The 21st International Conference on emerging Networking EXperiments and Technologies %O CoNEXT 2025 HKUST, Hong Kong, December 1-4, 2025

%0 Report %A Sattler, Patrick %A Kirstein, Matthias %A W&#252;strich, Lars %A Zirngibl, Johannes %A Carle, Georg %+ External Organizations External Organizations External Organizations Internet Architecture, MPI for Informatics, Max Planck Society External Organizations %T Lazy Eye Inspection: Capturing the State of Happy Eyeballs Implementations : %G eng %U http://hdl.handle.net/21.11116/0000-0011-1184-4 %U https://arxiv.org/abs/2412.00263 %D 2024 %X Happy Eyeballs (HE) started out by describing a mechanism that prefers IPv6<br>connections while ensuring a fast fallback to IPv4 when IPv6 fails. The IETF is<br>currently working on the third version of HE. While the standards include<br>recommendations for HE parameters choices, it is up to the client and OS to<br>implement HE. In this paper we investigate the state of HE in various clients,<br>particularly web browsers and recursive resolvers. We introduce a framework to<br>analyze and measure client's HE implementations and parameter choices.<br>According to our evaluation, only Safari supports all HE features. Safari is<br>also the only client implementation in our study that uses a dynamic IPv4<br>connection attempt delay, a resolution delay, and interlaces addresses. We<br>further show that problems with the DNS A record lookup can even delay and<br>interrupt the network connectivity despite a fully functional IPv6 setup with<br>Chrome and Firefox. We publish our testbed measurement framework and a<br>web-based tool to test HE properties on arbitrary browsers.<br> %K Computer Science, Networking and Internet Architecture, cs.NI