fa640706f5
this is esp. useful for v6 hosts, where your provider might give you a changing prefix (we assume /64), but your interface ids stay the same. but same mechanism also principally works for v4 (we assume /29), except that you usually do not get a v4 network where the network address is changing. and when it comes to dynamic addresses, many people only get 1 ipv4 address anyway. the related host could then be used for aliaseses with ifid == 0 for all aliases.
About nsupdate.info
===================
https://nsupdate.info is a free dynamic dns service.
nsupdate.info is also the name of the software used to implement it.
If you like, you can use it to host the service on your own server.
Documentation: https://nsupdateinfo.readthedocs.org/
Software project: https://github.com/nsupdate-info/nsupdate.info
.. image:: https://travis-ci.org/nsupdate-info/nsupdate.info.png
:target: https://travis-ci.org/nsupdate-info/nsupdate.info
.. image:: https://coveralls.io/repos/nsupdate-info/nsupdate.info/badge.png
:target: https://coveralls.io/r/nsupdate-info/nsupdate.info
.. image:: https://badge.fury.io/py/nsupdate.png
:target: http://badge.fury.io/py/nsupdate
.. image:: https://pypip.in/d/nsupdate/badge.png
:target: https://crate.io/packages/nsupdate/
(build and coverage are for latest repo code, package and downloads are for pypi release)
Features
========
* Frontend: Dynamic DNS updates via dyndns2 protocol (like supported
by many DSL/cable routers and client software).
* Backends:
- Uses DYNAMIC DNS UPDATE protocol (RFC 2136) to update compatible
nameservers like BIND, PowerDNS and others (the nameserver itself is
NOT included).
- Optionally uses dyndns2 protocol to update other services - we can
send updates to configurable 3rd party services when we receive an
update from the router / update client.
* Prominently shows visitor's IPs (v4 and v6) on main view,
shows reverse DNS lookup results (on host overview view).
* Multiple Hosts per user (using separate secrets for security)
* Add own domains / nameservers (public or only for yourself)
* Login with local or remote accounts (google, github, bitbucket, ...
accounts - everything supported by python-social-auth package)
* Manual IP updates via web interface
* Browser-based update client for temporary/adhoc usage
* Shows time since last update via api, whether it used TLS or not
* Shows v4 and v6 IP addresses (from master nameserver records)
* Shows client / server fault counters, available and abuse flags
* Supports IP v4 and v6, TLS.
* Easy and simple web interface, it tries to actively help to configure
routers / update clients / nameservers.
* Made with security and privacy in mind
* No nagging, no spamming, no ads - trying not to annoy users
* Free and Open Source Software, made with Python and Django