diff --git a/net-wireless/mdk4/Manifest b/net-wireless/mdk4/Manifest
new file mode 100644
index 0000000..b324dce
--- /dev/null
+++ b/net-wireless/mdk4/Manifest
@@ -0,0 +1 @@
+DIST mdk4-4.1.tar.gz 271042 BLAKE2B afa8baf4aa74966f7406884d0c8bb73986e85126ec03f8c1918ed365c64ea7be858af377a7b4b81792ef77fdcff073c23bfc11fe03abe864d8c83df9f6c7630f SHA512 b1472458ca02bf94f8717ac70b631f994c38cb67012fc38df0b6859778790b220447e6c1b3f15558e8f203da06ffa83bd36e5f037cb704e893c3fcf329022adc
diff --git a/net-wireless/mdk4/files/include_stdlib.patch b/net-wireless/mdk4/files/include_stdlib.patch
new file mode 100644
index 0000000..0e0acb1
--- /dev/null
+++ b/net-wireless/mdk4/files/include_stdlib.patch
@@ -0,0 +1,19 @@
+diff --git a/src/attacks/attacks.c b/src/attacks/attacks.c
+index e511e70..e75f660 100644
+--- a/src/attacks/attacks.c
++++ b/src/attacks/attacks.c
+@@ -1,3 +1,4 @@
++#include <stdlib.h>
+ #include <string.h>
+ 
+ #include "attacks.h"
+diff --git a/src/attacks/dummy.c b/src/attacks/dummy.c
+index 8fe5ba8..ae7aae2 100644
+--- a/src/attacks/dummy.c
++++ b/src/attacks/dummy.c
+@@ -1,4 +1,5 @@
+ #include <stdio.h>
++#include <stdlib.h>
+ #include <string.h>
+ 
+ #include "dummy.h"
diff --git a/net-wireless/mdk4/mdk4-4.1.ebuild b/net-wireless/mdk4/mdk4-4.1.ebuild
new file mode 100644
index 0000000..17b720e
--- /dev/null
+++ b/net-wireless/mdk4/mdk4-4.1.ebuild
@@ -0,0 +1,50 @@
+# Copyright 2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit flag-o-matic
+
+DESCRIPTION="Proof-of-concept tool to exploit common IEEE 802.11 protocol weaknesses."
+HOMEPAGE="https://github.com/aircrack-ng/mdk4"
+
+if [[ "${PV}" == "9999" ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/aircrack-ng/mdk4.git"
+else
+	SRC_URI="https://github.com/aircrack-ng/mdk4/archive/"${PV}".tar.gz -> "${P}".tar.gz"
+	KEYWORDS="~amd64"
+fi
+
+LICENSE="GPL-3"
+SLOT="0"
+
+RDEPEND="
+	dev-libs/libnl:3
+	net-libs/libpcap
+"
+DEPEND="${RDEPEND}"
+BDEPEND="virtual/pkgconfig"
+
+PATCHES=( ""${FILESDIR}"/include_stdlib.patch" )
+# https://github.com/aircrack-ng/mdk4/commit/a70d75cff34ba24231e75bcef7f8075eb4e7b0a3
+
+src_configure() {
+	filter-flags -fno-common
+	append-flags -fcommon
+	default
+}
+
+src_install() {
+	# The install phase is a tad bit too funky, so doing by hand
+	dosbin src/mdk4
+	doman man/mdk4.1
+
+	insinto /usr/share/"${PN}"
+	doins -r useful_files
+
+	HTML_DOCS="docs"
+	einstalldocs
+
+	dodoc AUTHORS CHANGELOG TODO
+}
diff --git a/net-wireless/mdk4/mdk4-9999.ebuild b/net-wireless/mdk4/mdk4-9999.ebuild
new file mode 100644
index 0000000..64aa828
--- /dev/null
+++ b/net-wireless/mdk4/mdk4-9999.ebuild
@@ -0,0 +1,47 @@
+# Copyright 2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit flag-o-matic
+
+DESCRIPTION="Proof-of-concept tool to exploit common IEEE 802.11 protocol weaknesses."
+HOMEPAGE="https://github.com/aircrack-ng/mdk4"
+
+if [[ "${PV}" == "9999" ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/aircrack-ng/mdk4.git"
+else
+	SRC_URI="https://github.com/aircrack-ng/mdk4/archive/"${PV}".tar.gz -> "${P}".tar.gz"
+	KEYWORDS="~amd64"
+fi
+
+LICENSE="GPL-3"
+SLOT="0"
+
+RDEPEND="
+	dev-libs/libnl:3
+	net-libs/libpcap
+"
+DEPEND="${RDEPEND}"
+BDEPEND="virtual/pkgconfig"
+
+src_configure() {
+	filter-flags -fno-common
+	append-flags -fcommon
+	default
+}
+
+src_install() {
+	# The install phase is a tad bit too funky, so doing by hand
+	dosbin src/mdk4
+	doman man/mdk4.1
+
+	insinto /usr/share/"${PN}"
+	doins -r useful_files
+
+	HTML_DOCS="docs"
+	einstalldocs
+
+	dodoc AUTHORS CHANGELOG TODO
+}
diff --git a/net-wireless/mdk4/metadata.xml b/net-wireless/mdk4/metadata.xml
new file mode 100644
index 0000000..e17cd36
--- /dev/null
+++ b/net-wireless/mdk4/metadata.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <upstream>
+    <remote-id type="github">aircrack-ng/mdk4</remote-id>
+  </upstream>
+</pkgmetadata>