Posts on Kina's Blog

Troubleshooting RouterOS DHCPv6 and NetBird's DNS upstream

Thu, 28 May 2026 00:00:00 +0000

The goal was to give the LAN behind my home server a working IPv6 egress, and to fix curl -6 and public DNS resolution failing on the server itself.

It turned out to be two consecutive problems:

RouterOS needed correct DHCPv6 client, Prefix Delegation, LAN RA and IPv6 firewall configuration.
NetBird had taken over the server’s /etc/resolv.conf, but no upstream resolver was configured in NetBird Management, so public DNS lookups failed.

RouterOS DHCPv6 client

Initially the MikroTik only received an IPv6 delegated prefix:

Notes on building my own agent framework

Sun, 29 Mar 2026 00:00:00 +0000

After weeks of tinkering and research, this weekend I finally settled on the agent framework I wanted. It started as a Go-based, purely coding-focused agent loop, and ended up as a Python implementation that borrows from bub, Tape System, Kapybara and jido — my own agent framework stitched out of their ideas. The overall approach borrows from bub too.

Declarative design

A lot of it is declarative. Extensibility is arguably the most important property of a framework, and declarative design is what buys it. I took bub’s “everything is a hook” and, per Opus’s suggestion, jido’s state_key-based fused design to keep plugins from getting too fine-grained. Whether it works as intended is still unverified.

2025 year in review

Wed, 31 Dec 2025 00:00:00 +0000

Time flies — it’s the last day of the year again. A lot happened this year, and I’ve been recording more of it than before. This long-overdue year-end review barely made it onto the 2025 train.

The biggest change is identity: six months ago I stopped being a student, and since then I’ve been tasting the life of a tech worker, overtime included.

A chapter that closed

I spent the first half of the year in a long-distance relationship, grabbing every chance to meet. In the second half, for various reasons, we broke up. Maybe it was always going to end this way.