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The Extensible Internet (EI) is an initiative to transform the Internet architecture by introducing a new Interposition Layer between L3 and L4 for services to be deployed on. Backed by verifiably secure infrastructure, EI provides new opportunities to improve the privacy and security of Internet clients. In this work, we address two challenges that the Internet faces today: maintaining privacy in DNS lookups and ensuring the integrity of third-party application servers. Specifically, we design and implement services for EI to facilitate oblivious DNS and remote attestation verification. We evaluate their execution and demonstrate how EI can help mimic and deploy these proposals without significantly compromising on performance.

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