ahcpd を Homebrew, apt, dnf, Nix でインストール

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• ahcpd

プロジェクトの歴史

The official AHCP page describes the protocol as a replacement for router discovery and DHCP in mobile ad-hoc networks, and as a companion to routing protocols such as Babel or OLSR. The ahcpd change log records an initial public release in August 2007.

The implementation evolved quickly from 2007 through 2011. Early releases added NTP server configuration, IPv4 stateful configuration, daemon operation, and server redundancy features. In August 2009, ahcpd 0.50 redesigned AHCP as a client-server protocol layered over a multicast routing layer, explicitly breaking compatibility with the older protocol.

採用の歴史

The official project page says AHCP was used on the PPS network and notes packages for Debian, Ubuntu, Fedora Extras, Arch Linux, and OpenWrt. The supplied package facts add Homebrew, Nix, and other Linux distribution packaging, showing the daemon's life as a specialist networking package rather than a mainstream desktop utility.

The official page also says AHCP was expected to be replaced eventually by an extended Homenet HNCP protocol, which helps explain its maintenance profile: useful and packaged, but tied to a specific era of mesh-network experimentation.

使われ方

Client use can be as simple as running ahcpd on an interface as root. Server use requires a configuration file; the official README shows ahcpd launched with -c /etc/ahcpd.conf and a file containing mode, IPv6 and IPv4 prefixes, lease directory, name servers, and NTP servers.

The man page documents ahcpd as a daemon with client, server, and forwarder modes. It also documents operational files such as /var/lib/ahcp-unique-id and scripts under /etc/ahcp/ that perform the actual interface configuration.

パッケージ好きにとっての重要性

ahcpd matters to package nerds as a compact example of late-2000s mesh-network plumbing: a real daemon, protocol draft, man page, distro packages, and OpenWrt relevance, but with a scope far narrower than DHCP clients or router-advertisement daemons.

It is also a useful reminder that not every packaged network daemon is broadly deployed. Some packages exist because a small protocol ecosystem needs reproducible builds and service integration across Unix-like systems.

タイムライン

• 2007: ahcpd 0.1 initial public release.
• 2008: ahcpd added IPv4 stateful configuration and daemon operation.
• 2009: ahcpd 0.50 redesigned AHCP as a client-server protocol over multicast routing.
• 2010: ahcpd 0.51 added plain-text server configuration files and prefix delegation support.
• 2011: ahcpd 0.53 fixed client renewal behavior and set packet TOS as network control.

Related projects

• Babel and OLSR are named by the official AHCP page as routing protocols expected to provide routes while AHCP handles address and service configuration.
• HNCP is named by the official page as the Homenet protocol the author hoped would eventually replace AHCP.

ソース

• https://raw.githubusercontent.com/jech/ahcpd/master/CHANGES
• https://raw.githubusercontent.com/jech/ahcpd/master/README
• https://www.irif.fr/~jch/software/ahcp
• https://www.irif.fr/~jch/software/ahcp/ahcpd.html
• source_facts.package-manager