Hedge 110: Andrew Alston and SRv6 Security

SRv6, a form of source routing, is the new and interesting method being created by the IETF to allow traffic engineering and traffic steering. This is not the first time the networking world has tried source routing, however—and in the spirit of rule 11, we should ask some questions. How and why did source routing fail last time? Have we learned those lessons and changed the way we’re doing things to overcome those limitations? Security seems to be one area where problems arise in the source routing paradigm.

Weekend Reads 111921


Kaspersky today publishes its Distributed Denial of Service (DDoS) Q3 2021 report, which found when compared to Q3 2020, the total number of DDoS attacks increased by nearly 24%, while the total number of smart attacks (advanced DDoS attacks that are often targeted) increased by 31% when compared to the same period last year.


IP fragmentation is a process that breaks large packets into smaller packets to allow them to more easily traverse a network. The process is common in the DNS, which is predominantly UDP based.


If you’ve been perusing cryptocurrency forums or video-game news recently—or spying everything from New York Times job listings to zany Twitter threads claiming that the traditional job interview is about to be replaced by blockchain-based “quests, adventures and courses to prove your worth”—you might have run into the term “Web3.”

Hedge 109: Edward Lewis and the DNS Core

What is the “core” of the DNS system, and how has it changed across the years? Edward Lewis joins Tom Ammon and Russ White to discuss his research into what the “core” of the domain name system is and how it has changed—including the rise of the large cloud players to the core of the default free zone.

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Brick (Argentina)

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Overlooking (Oxford)

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Posters (Argentina)