diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f1ea4ca
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+SOURCES/xt_time-5.9.tar.xz
diff --git a/.kmod-xt_time.metadata b/.kmod-xt_time.metadata
new file mode 100644
index 0000000..4b7b0b6
--- /dev/null
+++ b/.kmod-xt_time.metadata
@@ -0,0 +1 @@
+e59b35f0f53a18d5be6e207fb905548ffcd6d7cb SOURCES/xt_time-5.9.tar.xz
diff --git a/SPECS/kmod-xt_time.spec b/SPECS/kmod-xt_time.spec
new file mode 100644
index 0000000..e1d98c0
--- /dev/null
+++ b/SPECS/kmod-xt_time.spec
@@ -0,0 +1,170 @@
+%global pkg xt_time
+
+%global kernel_version_min 4.18.0-80.el8
+
+# To pick a specific kernel use `--define "kernel_version 4.18.0-315.el8"`
+# Otherwise the latest installed kernel-devel version later than
+# %%{kernel_version_min} will be used.
+
+%global kernel_version_latest %({ echo %{kernel_version_min}; rpm --query kernel-devel --queryformat '%%{VERSION}-%%{RELEASE}\\\n' | grep -v "package kernel-devel is not installed"; } | sort -V | sed -e '0,/^%{kernel_version_min}$/d' | tail -n 1)
+
+%if "%{kernel_version_latest}" != ""
+%{!?kernel_version:%{expand:%%global kernel_version %{kernel_version_latest}}}
+%endif
+
+%global _use_internal_dependency_generator 0
+%global __find_requires %{nil}
+%global __find_provides /usr/lib/rpm/find-provides
+
+%global debug_package %{nil}
+
+%global __spec_install_post \
+  %{?__debug_package:%{__debug_install_post}} \
+  %{__arch_install_post} \
+  %{__os_install_post} \
+  %{__mod_compress_install_post}
+
+%global __mod_compress_install_post find %{buildroot}/lib/modules -type f -name \*.ko -exec xz \{\} \\;
+
+
+Name:             kmod-%{pkg}
+Version:          5.9
+Release:          1%{?dist}
+Summary:          Time match support for Netfilter (xt_time)
+
+License:          GPLv2
+URL:              https://www.kernel.org/
+
+Source0:          %{pkg}-%{version}.tar.xz
+
+ExclusiveArch:    x86_64 aarch64
+
+BuildRequires:    elfutils-libelf-devel
+BuildRequires:    gcc
+BuildRequires:    kmod
+BuildRequires:    make
+BuildRequires:    redhat-rpm-config
+BuildRequires:    xz
+
+%{!?kernel_version:
+BuildRequires:    kernel-devel >= %{kernel_version_min}
+}
+
+%{?kernel_version:
+BuildRequires:    kernel-devel = %{kernel_version}
+BuildRequires:    kernel-devel-uname-r = %{kernel_version}.%{_arch}
+
+Requires:         kernel-core = %{kernel_version}
+Requires:         kernel-core-uname-r = %{kernel_version}.%{_arch}
+Requires:         kernel-modules = %{kernel_version}
+Requires:         kernel-modules-uname-r = %{kernel_version}.%{_arch}
+
+Provides:         installonlypkg(kernel-module)
+Provides:         %{name}-%{kernel_version}.%{_arch} = %{?epoch:%{epoch}:}%{version}-%{release}
+}
+
+Requires(post):   /usr/sbin/depmod
+Requires(postun): /usr/sbin/depmod
+
+Requires(post):   /usr/bin/dracut
+Requires(postun): /usr/bin/dracut
+
+
+%description
+This package provides the "time" match module for the Network packet filtering
+framework (Netfilter). It allows you to match based on the packet arrival or
+departure time.
+
+
+%prep
+%autosetup -p1 -n %{pkg}-%{version}
+
+
+%build
+pushd src
+%{__make} -C /usr/src/kernels/%{kernel_version}.%{_arch} %{?_smp_mflags} M=$PWD modules
+popd
+
+
+%install
+%{__install} -D -t %{buildroot}/lib/modules/%{kernel_version}.%{_arch}/extra/net/netfilter src/%{pkg}.ko
+
+# Make .ko objects temporarily executable for automatic stripping
+find %{buildroot}/lib/modules -type f -name \*.ko -exec chmod u+x \{\} \+
+
+
+%clean
+%{__rm} -rf %{buildroot}
+
+
+%post
+mkdir -p %{_localstatedir}/lib/rpm-state/sig-kmods
+touch %{_localstatedir}/lib/rpm-state/sig-kmods/%{kernel_version}.%{_arch}
+
+
+%preun
+mkdir -p %{_localstatedir}/lib/rpm-state/sig-kmods
+touch %{_localstatedir}/lib/rpm-state/sig-kmods/%{kernel_version}.%{_arch}
+
+
+%postun
+if [ -f %{_localstatedir}/lib/rpm-state/sig-kmods/%{kernel_version}.%{_arch} ]
+then
+    if [ -f /lib/modules/%{kernel_version}.%{_arch}/System.map ]
+    then
+        /usr/sbin/depmod -aeF /lib/modules/%{kernel_version}.%{_arch}/System.map %{kernel_version}.%{_arch}
+    fi
+
+    if [ -f /boot/initramfs-%{kernel_version}.%{_arch}.img ]
+    then
+        if /usr/bin/dracut -f --rebuild /boot/initramfs-%{kernel_version}.%{_arch}.img /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew %{kernel_version}.%{_arch}
+        then
+            if ! cmp -s /boot/initramfs-%{kernel_version}.%{_arch}.img /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew
+            then
+                mv /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew /boot/initramfs-%{kernel_version}.%{_arch}.img
+            else
+                rm -f /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew
+            fi
+        fi
+    fi
+
+    rm -f %{_localstatedir}/lib/rpm-state/sig-kmods/%{kernel_version}.%{_arch}
+    rmdir --ignore-fail-on-non-empty %{_localstatedir}/lib/rpm-state/sig-kmods
+fi
+
+
+%posttrans
+if [ -f %{_localstatedir}/lib/rpm-state/sig-kmods/%{kernel_version}.%{_arch} ]
+then
+    if [ -f /lib/modules/%{kernel_version}.%{_arch}/System.map ]
+    then
+        /usr/sbin/depmod -aeF /lib/modules/%{kernel_version}.%{_arch}/System.map %{kernel_version}.%{_arch}
+    fi
+
+    if [ -f /boot/initramfs-%{kernel_version}.%{_arch}.img ]
+    then
+        if /usr/bin/dracut -f --rebuild /boot/initramfs-%{kernel_version}.%{_arch}.img /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew %{kernel_version}.%{_arch}
+        then
+            if ! cmp -s /boot/initramfs-%{kernel_version}.%{_arch}.img /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew
+            then
+                mv /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew /boot/initramfs-%{kernel_version}.%{_arch}.img
+            else
+                rm -f /boot/initramfs-%{kernel_version}.%{_arch}.img.rpmnew
+            fi
+        fi
+    fi
+
+    rm -f %{_localstatedir}/lib/rpm-state/sig-kmods/%{kernel_version}.%{_arch}
+    rmdir --ignore-fail-on-non-empty %{_localstatedir}/lib/rpm-state/sig-kmods
+fi
+
+
+%files
+%defattr(644,root,root,755)
+/lib/modules/%{kernel_version}.%{_arch}
+%license COPYING
+
+
+%changelog
+* Fri Aug 13 2021 Peter Georg <peter.georg@physik.uni-regensburg.de> - 5.9-1
+- Initial version