IPv6 DNS config daemon
sepherosa at gmail.com
Thu Nov 19 00:48:10 PST 2015
On Fri, Oct 23, 2015 at 2:23 PM, Sepherosa Ziehau <sepherosa at gmail.com> wrote:
> It could be useful. Is it available somewhere? So that we could take
> a look at it.
> On Fri, Oct 23, 2015 at 10:57 AM, Charles Musser <cmusser at sonic.net> wrote:
>> While experimenting with IPv6 SLAAC, I wrote a daemon that configures
>> a host's DNS resolver using the scheme described in RFC 6106.
>> FreeBSD's rtsold(1) and "radns" (in the ports collection) are two
>> programs that already do this. However, this one might be nice to have
>> in the base system. Features:
>> - Small, simple design: around 750 LoC in a single source file.
>> - Developed on DragonFly, so no portability overhead. Tested on
>> FreeBSD too, so probably works on other BSDs.
>> - No configuration, other than command line flags for foreground
>> mode and debug output.
>> - Data validation: Performs basic sanity checks on router
>> advertisement options; Checks validity of server addresses and search
>> domains; enforces system-defined size limits for lists of these
>> - Ran under Valgrind' memcheck (on FreeBSD) with no leaks found.
>> - Not entangled with rtsold(1) which need not be running and might
>> not exist if the kernel took over soliciting router advertisements (as
>> is now done in OpenBSD).
>> SLAAC is a somewhat dusty corner of IPv6 configuration, so maybe the
>> existing programs are good enough. This limited use-case is both an
>> argument for and against including a new implementation. Depending
>> on your tolerance/enthusiasm level, it's either "why not?" or "why
>> Is this something the project would want?
After brief discussion, we think it should be in dports.
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