Adding upstream version 2.15.2.

Signed-off-by: Daniel Baumann <daniel@debian.org>

README.md

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+# DNS Statistics Collector
+
+[![Bugs](https://sonarcloud.io/api/project_badges/measure?project=dns-oarc%3Adsc&metric=bugs)](https://sonarcloud.io/summary/new_code?id=dns-oarc%3Adsc) [![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=dns-oarc%3Adsc&metric=security_rating)](https://sonarcloud.io/summary/new_code?id=dns-oarc%3Adsc)
+
+DNS Statistics Collector (DSC) is a tool used for collecting and exploring
+statistics from busy DNS servers. It can be set up to run on or near
+nameservers to generate aggregated data that can then be transported to
+central systems for processing, displaying and archiving.
+
+Together with `dsc-datatool` the aggregated data can be furthur enriched
+and converted for import into for example InfluxDB which can then be
+accessed by Grafana for visualzation, see this wiki on how to set up that:
+- https://github.com/DNS-OARC/dsc-datatool/wiki/Setting-up-a-test-Grafana
+
+DSC data transforming and enriching tool can be found here:
+- https://github.com/DNS-OARC/dsc-datatool
+
+More information about DSC may be found here:
+- https://www.dns-oarc.net/tools/dsc
+- https://www.dns-oarc.net/oarc/data/dsc
+
+Issues should be reported here:
+- https://github.com/DNS-OARC/dsc/issues
+
+General support and discussion:
+- Mattermost: https://chat.dns-oarc.net/community/channels/oarc-software
+- mailing-list: https://lists.dns-oarc.net/mailman/listinfo/dsc
+
+## Dependencies
+
+`dsc` requires a couple of libraries beside a normal C compiling
+environment with autoconf, automake, libtool and pkgconfig.
+
+`dsc` has a non-optional dependency on the PCAP library and optional
+dependency on the MaxMindDB library (for the `asn` and `country` indexer).
+
+To install the dependencies under Debian/Ubuntu:
+```
+apt-get install -y libpcap-dev
+```
+
+To install the dependencies under CentOS (with EPEL/PowerTools enabled):
+```
+yum install -y libpcap-devel
+```
+
+To install the dependencies under FreeBSD 10+ using `pkg`:
+```
+pkg install -y libpcap
+```
+
+NOTE: It is recommended to install the PCAP library from source/ports on
+OpenBSD since the bundled version is an older and modified version.
+
+### DNSTAP support
+
+To enable DNSTAP support, first install the necessary dependencies and
+then run `configure` with `--enable-dnstap`.
+
+- Debian/Ubuntu: `apt-get install -y libdnswire-dev libuv1-dev`
+- CentOS: `yum install -y dnswire-devel libuv-devel`
+- FreeBSD: `pkg install -y libuv`
+- OpenBSD: `pkg_add libuv`
+
+`dnswire` packages for Debian, Ubuntu and CentOS exists at
+[https://dev.dns-oarc.net/packages/](https://dev.dns-oarc.net/packages/),
+for other distributions please see
+[https://github.com/DNS-OARC/dnswire](https://github.com/DNS-OARC/dnswire).
+
+## Building from source tarball
+
+The [source tarball from DNS-OARC](https://www.dns-oarc.net/dsc/download)
+comes prepared with `configure`:
+
+```
+tar zxvf dsc-version.tar.gz
+cd dsc-version
+./configure [options]
+make
+make install
+```
+
+NOTE: If building fails on FreeBSD/OpenBSD, try adding these configure
+options: `--with-extra-cflags="-I /usr/local/include" --with-extra-ldflags="-L/usr/local/lib"`.
+
+## Building from Git repository
+
+If you are building `dsc` from it's Git repository you will first need
+to initiate the Git submodules that exists and later create autoconf/automake
+files, this will require a build environment with autoconf, automake, libtool
+and pkgconfig to be installed.
+
+```
+git clone https://github.com/DNS-OARC/dsc.git
+cd dsc
+git submodule update --init
+./autogen.sh
+./configure [options]
+make
+make install
+```
+
+NOTE: If building fails on FreeBSD/OpenBSD, try adding these configure
+options: `--with-extra-cflags="-I /usr/local/include" --with-extra-ldflags="-L/usr/local/lib"`.
+
+## Puppet
+
+John Bond at ICANN DNS Engineering team has developed a puppet module for DSC,
+the module and code can be found here:
+- https://forge.puppet.com/icann/dsc
+- https://github.com/icann-dns/puppet-dsc