Reading up on dns

IPv6 stopped working on the author's home network because AdGuard Home's DNS settings had an option checked that disabled all IPv6 DNS queries.

Cloudflare's reordering of CNAME records in DNS responses broke glibc and other clients due to widespread reliance on undocumented ordering.

An interactive guide explains browser mechanics from URL parsing to TCP connections and HTTP requests, aiming to build intuitive understanding.

Anna's Archive lost its main annas-archive.org domain due to a surprise suspension, but the shadow library remains accessible via alternative domains amid ongoing legal pressure.

The post describes a multi-layered approach to blocking all online ads using tools like uBlock Origin, DNS filters, and VPNs.

Punycode uses adaptive bias adjustment, delta compression, and variable-length base-36 encoding to efficiently encode Unicode into ASCII for DNS without shared state.

AWS launched a Route 53 feature guaranteeing 60-minute RTO for DNS changes during US East region disruptions, acknowledging the region's notorious instability.

Hacker News commenters discuss an investigation into suspicious pressure on Archive.today's DNS providers using CSAM allegations to force blocking.