hi, i'd like to get some feedback on whether i should implement some changes in the unbound debian packaging:
* integration with resolvconf as a provider of recursive DNS
resolution. (#562031)
* retrieving a list of upstream recursive DNS servers from
resolvconf and automatically configuring these servers as
forwarders, and deconfiguring them when they are no longer
available. (#567879)
* enabling DNSSEC validation by default. (#594911)
i'm inclined to implement all three of these features and make them each
individually toggle-able via /etc/default/unbound, and to enable these
features by default, but i would like to hear some wider opinions. (i
have never even used resolvconf before.)
there are some sub-issues such as:
* automatically creating key material and configuration for
unbound-control (a la bind9 and rndc) so that unbound-control can
be used to reload the forwarder configuration without dumping the
cache.
* making sure we don't accidentally attempt to configure ourselves
as a forwarder.
* how, or whether to include the root trust anchor. unbound now has
a utility called unbound-anchor which attempts to fetch an updated
root trust anchor from https://data.iana.org/root-anchors/, using
a built-in copy of the ICANN HTTPS cert (so, it doesn't rely on
x509 PKI); failing that, it writes out a built-in copy of the root
trust anchor.
it would be possible to invoke unbound-anchor in the unbound
postinst in order to write out a trust anchor file into e.g.
/var/cache/unbound, which is then referenced by the unbound config
file, and it would also be possible to re-invoke unbound-anchor in
the unbound init script. this would mean that a DNS server with
the unbound package would cause HTTPS connections to be made,
although if these connections failed there would be a fall-back
trust anchor used.
it's possible that at some point in the future old versions of
unbound-anchor would no longer be able to securely generate an
up-to-date root trust anchor file, but i believe this could be
adequately handled by a stable-security or stable point release
update.
--
Robert Edmonds
edmo...@debian.org
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