diff --git a/.gitea/workflows/source-release.yml b/.gitea/workflows/source-release.yml
new file mode 100644
index 0000000..3e8e4e2
--- /dev/null
+++ b/.gitea/workflows/source-release.yml
@@ -0,0 +1,290 @@
+name: Source release
+
+on:
+  push:
+    tags:
+      - "v*"
+    branches:
+      - master
+  workflow_dispatch:
+
+jobs:
+  source-package:
+    runs-on: ubuntu-latest
+
+    env:
+      GITEA_API: https://gitea.disconnected-by-peer.at/api/v1
+      OWNER: mars_nwe
+      REPO: ipx-utils
+
+    steps:
+      - name: Check out source
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
+          token: ${{ secrets.RELEASE_TOKEN }}
+
+      - name: Fetch tags explicitly
+        run: |
+          set -e
+          git fetch --force --tags
+          echo "describe:"
+          git describe --tags --long --match 'v*' --always || true
+          echo "exact tag:"
+          git describe --tags --exact-match || true
+          echo "points-at-head:"
+          git tag --points-at HEAD || true
+
+      - name: Install build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            build-essential \
+            autoconf \
+            automake \
+            autopoint \
+            gettext \
+            gettext-base \
+            pkg-config \
+            curl \
+            jq
+
+      - name: Determine version
+        id: version
+        env:
+          REF_TYPE: ${{ gitea.ref_type || github.ref_type }}
+          REF_NAME: ${{ gitea.ref_name || github.ref_name }}
+          SHA: ${{ gitea.sha || github.sha }}
+        run: |
+          set -e
+
+          BASE_VERSION="$(sed -n 's/^AC_INIT(\[\([^]]*\)\], *\[\([^]]*\)\].*/\2/p' configure.ac | head -n1)"
+          PACKAGE_NAME="$(sed -n 's/^AC_INIT(\[\([^]]*\)\], *\[\([^]]*\)\].*/\1/p' configure.ac | head -n1)"
+
+          if [ -z "$BASE_VERSION" ] || [ -z "$PACKAGE_NAME" ]; then
+            echo "Could not determine package/version from configure.ac"
+            exit 1
+          fi
+
+          if [ "$REF_TYPE" = "tag" ]; then
+            VERSION="$BASE_VERSION"
+            DIST_BASENAME="${PACKAGE_NAME}-${VERSION}"
+          else
+            DESCRIBE="$(git describe --tags --long --match 'v*' --always)"
+            COUNT="$(printf '%s' "$DESCRIBE" | sed -nE 's/^v?[0-9][^-]*-([0-9]+)-g[0-9a-f]+$/\1/p')"
+            GITID="$(printf '%s' "$DESCRIBE" | sed -nE 's/^v?[0-9][^-]*-[0-9]+-(g[0-9a-f]+)$/\1/p')"
+
+            if [ -z "$COUNT" ] || [ -z "$GITID" ]; then
+              COUNT="$(git rev-list --count HEAD)"
+              GITID="g$(printf '%s' "$SHA" | cut -c1-7)"
+            fi
+
+            VERSION="${BASE_VERSION}-dev.${COUNT}-${GITID}"
+            DIST_BASENAME="${PACKAGE_NAME}-${VERSION}"
+          fi
+
+          echo "package_name=$PACKAGE_NAME" >> "$GITHUB_OUTPUT"
+          echo "base_version=$BASE_VERSION" >> "$GITHUB_OUTPUT"
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+          echo "dist_basename=$DIST_BASENAME" >> "$GITHUB_OUTPUT"
+
+          echo "Package: $PACKAGE_NAME"
+          echo "Base version: $BASE_VERSION"
+          echo "Release version: $VERSION"
+          echo "Dist basename: $DIST_BASENAME"
+
+      - name: Set development version
+        if: ${{ (gitea.ref_type || github.ref_type) != 'tag' }}
+        env:
+          VERSION: ${{ steps.version.outputs.version }}
+        run: |
+          set -e
+          sed -i -E "s/^AC_INIT\(\[ipx-utils\], *\[[^]]+\]/AC_INIT([ipx-utils], [${VERSION}]/" configure.ac
+
+      - name: Generate build system
+        run: |
+          set -e
+          autopoint --force
+          autoreconf -fi
+
+      - name: Configure
+        run: |
+          set -e
+          ./configure --prefix=/usr
+
+      - name: Build
+        run: |
+          set -e
+          make V=1
+
+      - name: Run distcheck
+        run: |
+          set -e
+          make distcheck
+
+      - name: Collect dist archives
+        id: pkg
+        env:
+          DIST_BASENAME: ${{ steps.version.outputs.dist_basename }}
+        run: |
+          set -e
+
+          mkdir -p dist-artifacts
+
+          for archive in ${DIST_BASENAME}.tar.gz ${DIST_BASENAME}.tar.xz; do
+            if [ -f "$archive" ]; then
+              cp -av "$archive" dist-artifacts/
+            fi
+          done
+
+          if ! ls dist-artifacts/*.tar.* >/dev/null 2>&1; then
+            echo "No dist archives found"
+            ls -la
+            exit 1
+          fi
+
+          echo "files<<EOF" >> "$GITHUB_OUTPUT"
+          realpath dist-artifacts/*.tar.* >> "$GITHUB_OUTPUT"
+          echo "EOF" >> "$GITHUB_OUTPUT"
+
+          echo "names<<EOF" >> "$GITHUB_OUTPUT"
+          basename -a dist-artifacts/*.tar.* >> "$GITHUB_OUTPUT"
+          echo "EOF" >> "$GITHUB_OUTPUT"
+
+          ls -lh dist-artifacts
+
+          for archive in dist-artifacts/*.tar.*; do
+            echo
+            echo "Archive content preview: $archive"
+            case "$archive" in
+              *.tar.gz) tar -tzf "$archive" | sed -n '1,25p' ;;
+              *.tar.xz) tar -tJf "$archive" | sed -n '1,25p' ;;
+            esac
+          done
+
+      - name: Decide release target
+        id: target
+        env:
+          REF_TYPE: ${{ gitea.ref_type || github.ref_type }}
+          REF_NAME: ${{ gitea.ref_name || github.ref_name }}
+          SHA: ${{ gitea.sha || github.sha }}
+        run: |
+          set -e
+
+          if [ "$REF_TYPE" = "tag" ]; then
+            echo "tag=$REF_NAME" >> "$GITHUB_OUTPUT"
+            echo "name=$REF_NAME" >> "$GITHUB_OUTPUT"
+            echo "prerelease=false" >> "$GITHUB_OUTPUT"
+          else
+            SHORT_SHA="$(printf '%s' "$SHA" | cut -c1-7)"
+            echo "tag=development" >> "$GITHUB_OUTPUT"
+            echo "name=development ($REF_NAME @ $SHORT_SHA)" >> "$GITHUB_OUTPUT"
+            echo "prerelease=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Create or update release
+        env:
+          GITEA_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+          REL_TAG: ${{ steps.target.outputs.tag }}
+          REL_NAME: ${{ steps.target.outputs.name }}
+          REL_PRERELEASE: ${{ steps.target.outputs.prerelease }}
+        run: |
+          set -e
+
+          RELEASE_JSON="$(curl -fsS \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            "${GITEA_API}/repos/${OWNER}/${REPO}/releases/tags/${REL_TAG}" || true)"
+
+          if [ -z "$RELEASE_JSON" ]; then
+            RELEASE_JSON="$(curl -fsS -X POST \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              -H "Content-Type: application/json" \
+              "${GITEA_API}/repos/${OWNER}/${REPO}/releases" \
+              -d "$(jq -n \
+                --arg tag "$REL_TAG" \
+                --arg name "$REL_NAME" \
+                --argjson prerelease "$REL_PRERELEASE" \
+                '{tag_name:$tag,name:$name,draft:false,prerelease:$prerelease}')" )"
+          else
+            RELEASE_ID="$(printf '%s' "$RELEASE_JSON" | jq -r '.id')"
+            RELEASE_JSON="$(curl -fsS -X PATCH \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              -H "Content-Type: application/json" \
+              "${GITEA_API}/repos/${OWNER}/${REPO}/releases/${RELEASE_ID}" \
+              -d "$(jq -n \
+                --arg tag "$REL_TAG" \
+                --arg name "$REL_NAME" \
+                --argjson prerelease "$REL_PRERELEASE" \
+                '{tag_name:$tag,name:$name,draft:false,prerelease:$prerelease}')" )"
+          fi
+
+          echo "$RELEASE_JSON" > release.json
+
+      - name: Delete old development assets
+        if: ${{ steps.target.outputs.tag == 'development' }}
+        env:
+          GITEA_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+        run: |
+          set -e
+
+          RELEASE_ID="$(jq -r '.id' release.json)"
+
+          ASSET_IDS="$(curl -fsS \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            "${GITEA_API}/repos/${OWNER}/${REPO}/releases/${RELEASE_ID}" \
+            | jq -r '.assets[]? | .id')"
+
+          if [ -z "$ASSET_IDS" ]; then
+            echo "No old development assets to delete."
+            exit 0
+          fi
+
+          for ASSET_ID in $ASSET_IDS; do
+            echo "Deleting old development asset id=${ASSET_ID}"
+            curl -fsS -X DELETE \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              "${GITEA_API}/repos/${OWNER}/${REPO}/releases/${RELEASE_ID}/assets/${ASSET_ID}"
+          done
+
+      - name: Delete old assets with same names if present
+        env:
+          GITEA_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+        run: |
+          set -e
+
+          RELEASE_ID="$(jq -r '.id' release.json)"
+
+          for FILE in dist-artifacts/*.tar.*; do
+            NAME="$(basename "$FILE")"
+            ASSET_ID="$(curl -fsS \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              "${GITEA_API}/repos/${OWNER}/${REPO}/releases/${RELEASE_ID}" \
+              | jq -r --arg NAME "$NAME" '.assets[]? | select(.name==$NAME) | .id' \
+              | head -n1)"
+
+            if [ -n "$ASSET_ID" ]; then
+              echo "Deleting old asset: $NAME"
+              curl -fsS -X DELETE \
+                -H "Authorization: token ${GITEA_TOKEN}" \
+                "${GITEA_API}/repos/${OWNER}/${REPO}/releases/${RELEASE_ID}/assets/${ASSET_ID}"
+            fi
+          done
+
+      - name: Upload tarballs to release
+        env:
+          GITEA_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+        run: |
+          set -e
+
+          RELEASE_ID="$(jq -r '.id' release.json)"
+
+          for FILE in dist-artifacts/*.tar.*; do
+            NAME="$(basename "$FILE")"
+            echo "Uploading $NAME"
+            curl -fsS -X POST \
+              -H "Authorization: token ${GITEA_TOKEN}" \
+              -H "Content-Type: application/octet-stream" \
+              --data-binary @"${FILE}" \
+              "${GITEA_API}/repos/${OWNER}/${REPO}/releases/${RELEASE_ID}/assets?name=${NAME}"
+          done
diff --git a/Makefile.am b/Makefile.am
index 97b26af..3bc278d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,58 +1,77 @@
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = po
+
 AM_CFLAGS = -Wall -Wextra
 
 sbin_PROGRAMS =			\
-	ipx_configure		\
-	ipx_interface		\
-	ipx_internal_net	\
-	ipx_route		\
-	ipx_cmd			\
-	ipx_dump		\
-	ipx_parse
+    ipx_configure		\
+    ipx_interface		\
+    ipx_internal_net		\
+    ipx_route			\
+    ipx_cmd			\
+    ipx_dump			\
+    ipx_parse
 
 ipx_configure_SOURCES =		\
-	src/ipx_configure.c
+    src/nls.h			\
+    src/ipx_configure.c
 
 ipx_interface_SOURCES =		\
-	src/ipxutil.c		\
-	src/ipx_interface.c
+    src/nls.h			\
+    src/ipxutil.h		\
+    src/ipxutil.c		\
+    src/ipx_interface.c
 
 ipx_internal_net_SOURCES =	\
-	src/ipxutil.c		\
-	src/ipx_internal_net.c
+    src/nls.h			\
+    src/ipxutil.h		\
+    src/ipxutil.c		\
+    src/ipx_internal_net.c
 
 ipx_route_SOURCES =		\
-	src/ipxutil.c		\
-	src/ipx_route.c
+    src/nls.h			\
+    src/ipxutil.h		\
+    src/ipxutil.c		\
+    src/ipx_route.c
 
 ipx_cmd_SOURCES =		\
-	src/ipx_cmd.c
+    src/nls.h			\
+    src/netlink.h		\
+    src/ipx_cmd.c
 
 ipx_dump_SOURCES =		\
-	tools/ipxutil.c	\
-	tools/ipxdump.c
+    tools/nls.h			\
+    tools/ipxutil.h		\
+    tools/ipxutil.c		\
+    tools/ipxdump.c
 
 ipx_parse_SOURCES =		\
-	tools/ipxutil.c	\
-	tools/ipxparse.c
+    tools/nls.h			\
+    tools/ipxutil.h		\
+    tools/ipxutil.c		\
+    tools/ipxparse.c
 
 man_MANS =			\
-	docs/ipx_configure.8	\
-	docs/ipx_interface.8	\
-	docs/ipx_internal_net.8	\
-	docs/ipx_route.8 \
-	docs/ipx_cmd.8
+    docs/ipx_configure.8	\
+    docs/ipx_interface.8	\
+    docs/ipx_internal_net.8	\
+    docs/ipx_route.8		\
+    docs/ipx_cmd.8
 
 samples_files =			\
-	Samples/ipxrcv.c	\
-	Samples/ipxsend.c	\
-	Samples/rip.c		\
-	Samples/sap.c \
-	Samples/samples.h
+    Samples/ipxrcv.c		\
+    Samples/ipxsend.c		\
+    Samples/rip.c		\
+    Samples/sap.c		\
+    Samples/samples.h
 
 EXTRA_DIST =			\
-	$(man_MANS)		\
-	$(samples_files)	\
-	autogen.sh		\
-	scripts/config.ipx	\
-	scripts/init.ipx
-SUBDIRS = po
+    $(man_MANS)			\
+    $(samples_files)		\
+    autogen.sh			\
+    scripts/config.ipx		\
+    scripts/init.ipx
+
+DISTCLEANFILES =		\
+    po/stamp-po
diff --git a/configure.ac b/configure.ac
index 92f8dbd..f522b7c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,33 +1,22 @@
-
-dnl Define a config.h string from a configure directory variable.
-AC_DEFUN([AC_DEFINE_DIR], [
-  prefix_NONE=
-  exec_prefix_NONE=
-  test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix
-  test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix
-  ac_define_dir=`eval echo [$]$2`
-  ac_define_dir=`eval echo [$]ac_define_dir`
-  AC_DEFINE_UNQUOTED([$1], ["$ac_define_dir"], [$3])
-  test "$prefix_NONE" && prefix=NONE
-  test "$exec_prefix_NONE" && exec_prefix=NONE
-])
-
 AC_INIT([ipx-utils], [1.2], [mario.fetka@disconnected-by-peer.at])
+AC_CONFIG_SRCDIR([src/ipx_configure.c])
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIRS([m4])
+
+AM_INIT_AUTOMAKE([foreign subdir-objects dist-xz])
 AM_GNU_GETTEXT([external])
 AM_GNU_GETTEXT_VERSION([0.21])
 
-AM_INIT_AUTOMAKE([subdir-objects])
-AC_CONFIG_SRCDIR([src/ipx_configure.c])
-AC_CONFIG_HEADERS([config.h])
-
-AC_CONFIG_FILES([Makefile po/Makefile.in])
+AC_PROG_CC
 
 AC_CHECK_HEADERS([libintl.h])
 AC_SEARCH_LIBS([gettext], [intl])
 AC_CHECK_FUNCS([gettext bindtextdomain textdomain])
-AC_DEFINE_DIR([LOCALEDIR], [localedir], [Define location of message catalogs])
 
-AC_PROG_CC
-AM_PROG_CC_C_O
+AC_DEFINE_UNQUOTED([LOCALEDIR], ["${datadir}/locale"], [Define location of message catalogs])
 
+AC_CONFIG_FILES([
+	Makefile
+	po/Makefile.in
+])
 AC_OUTPUT