diff --git a/network/mdk4/README b/network/mdk4/README
new file mode 100644
index 0000000000..bde5292e71
--- /dev/null
+++ b/network/mdk4/README
@@ -0,0 +1,8 @@
+MDK is a proof-of-concept tool to exploit common IEEE 802.11 protocol
+weaknesses.
+
+MDK4 is a new version of MDK3.
+
+MDK4 is a Wi-Fi testing tool from E7mer, ASPj of k2wrlz, it uses the
+osdep library from the aircrack-ng project to inject frames on several
+operating systems.
diff --git a/network/mdk4/mdk4.SlackBuild b/network/mdk4/mdk4.SlackBuild
new file mode 100644
index 0000000000..f3e3c5b046
--- /dev/null
+++ b/network/mdk4/mdk4.SlackBuild
@@ -0,0 +1,90 @@
+#!/bin/bash
+
+# Slackware build script for MDK4
+
+# Copyright 2022 pyllyukko
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=mdk4
+VERSION=${VERSION:-4.2}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+  exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+sed -i \
+  -e 's/^\(PREFIX\s\+=\s\+\).\+$/\1\/usr/' \
+  -e 's/^\(MANDIR\s\+=\s\+\$(PREFIX)\/\).\+$/\1man/' \
+  -e 's/^\(\s\+\(install\|gzip\)\b.\+\/man8\/mdk4\)\.2$/\1.8/' \
+  Makefile
+sed -i \
+  -e 's/^\(\s\+install\b.\+\s\+\)\(\$(SBINDIR).\+\)$/\1$(DESTDIR)\2/' \
+  -e 's/^\(\s\+\)\(mkdir\s\+-p\s\+\/usr\/local\/src\/mdk4\|cp\s\+-r\s\+pocs\s\+\/usr\/local\/src\/mdk4\)$/\1#\2/' \
+  src/Makefile
+make
+make install DESTDIR=$PKG
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a \
+  AUTHORS CHANGELOG COPYING README.md TODO \
+  $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
diff --git a/network/mdk4/mdk4.info b/network/mdk4/mdk4.info
new file mode 100644
index 0000000000..86a0a0728c
--- /dev/null
+++ b/network/mdk4/mdk4.info
@@ -0,0 +1,10 @@
+PRGNAM="mdk4"
+VERSION="4.2"
+HOMEPAGE="https://github.com/aircrack-ng/mdk4"
+DOWNLOAD="https://github.com/aircrack-ng/mdk4/archive/refs/tags/4.2/mdk4-4.2.tar.gz"
+MD5SUM="9f5307f29cbde23da235e0c1f49c9bf5"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES=""
+MAINTAINER="pyllyukko"
+EMAIL="pyllyukko@maimed.org"
diff --git a/network/mdk4/slack-desc b/network/mdk4/slack-desc
new file mode 100644
index 0000000000..ed5b7770b9
--- /dev/null
+++ b/network/mdk4/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+    |-----handy-ruler------------------------------------------------------|
+mdk4: mdk4 (Wi-Fi testing tool)
+mdk4:
+mdk4: MDK is a proof-of-concept tool to exploit common IEEE 802.11 protocol
+mdk4: weaknesses.
+mdk4:
+mdk4: MDK4 is a new version of MDK3.
+mdk4:
+mdk4:
+mdk4:
+mdk4: Homepage: https://github.com/aircrack-ng/mdk4
+mdk4: