- Merge PR #228 : infra-keep-probing option to probe hosts that are
down. Add infra-keep-probing: yes option. Hosts that are down are
probed more frequently.
With the option turned on, it probes about every 120 seconds,
eventually after exponential backoff, and that keeps that way. If
traffic keeps up for the domain. It probes with one at a time, eg.
one query is allowed to probe, other queries within that 120 second
interval are turned away.
Unbound is a validating, recursive, caching DNS resolver. It is designed to be
fast and lean and incorporates modern features based on open standards. If you
have any feedback, we would love to hear from you. Don’t hesitate to
create an issue on Github
or post a message on the Unbound mailing list.
You can learn more about Unbound by reading our
documentation.
Compiling
Make sure you have the C toolchain, OpenSSL and its include files, and libexpat
installed. Unbound can be compiled and installed using:
./configure && make && make install
You can use libevent if you want. libevent is useful when using many (10000)
outgoing ports. By default max 256 ports are opened at the same time and the
builtin alternative is equally capable and a little faster.
Use the --with-libevent=dir configure option to compile Unbound with libevent
support.
Unbound configuration
All of Unbound's configuration options are described in the man pages, which
will be installed and are available on the Unbound
documentation page.
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