BGP topics from IETF 126
BGP ORIGIN, ASPAs, PAVA, and ASRAs at IETF 126.
DNS topics at IETF 126
Recursive resolver DNS query behaviour, Post-quantum DNSSEC, Optimistic DNS, Automating DNS delegation management, and more from IETF 126.
The delicate art of cryptographic maintenance: When small certs break big chains
Around mid-2026, we began receiving user complaints about certificate validation failures. The failure wasn’t a single bug, but the collision of optimization and slow distribution.
Data synchronization
Distributed systems depend on synchronization, but every approach has tradeoffs. From full copies to delta updates, how do you choose the right method?
The economics of SpaceX
SpaceX and Starlink’s valuation, reality, and the limits of connectivity economics.
Notes from NANOG 97
AI eats the world, geolocation, measuring IPv6, and the cost of SSH from NANOG 97.
DNS query duplication
In the DNS, name resolution space queries are free. To what extent do we see over-querying on the part of recursive resolvers in the DNS?
Cold start DNS
There is an obvious tension between resilience and speed in the design of a resolver’s query strategy. DNS cold starts bring that tension into focus.
Centrality in the Internet’s names
The Internet’s Domain Name System undertakes a vitally important role in today’s Internet. The question here is — is the DNS centralized?
Authoritative DNS over encrypted transport at OARC 45
The use of encrypted DNS transports for communication between recursive resolvers and authoritative services in the DNS was an important topic of discussion OARC 46 in Edinburgh.