eBPF/XDP to implement fully functioning DNS authoritative servers

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Aisse Tejas

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Jan 26, 2024, 2:30:22 PMJan 26
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Hey folks!

We’ve used eBPF/XDP to implement fully functioning DNS authoritative servers! It's part of our OpenResty DDoS product.

We made our eBPF programs return DNS replies directly. Achieving 8M+ PPS on a single desktop Linux machine ;) Supporting older kernels like RHEL 8's 4.18 kernels.

EBP-XDP.jpeg
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