From 75a16f53f4d29086a250b0ffa57c3821adf48047 Mon Sep 17 00:00:00 2001
From: Mario Fetka <mario.fetka@gmail.com>
Date: Thu, 30 Apr 2026 19:40:14 +0200
Subject: [PATCH] add samples and IPX service configuration

---
 .gitignore                     |  12 +
 Makefile.am                    |   9 +-
 Samples/sap.c                  |  95 -----
 conf/Makefile.am               |  43 +++
 conf/Makefile.in               | 600 +++++++++++++++++++++++++++++++
 conf/ipx.confd.in              | 140 ++++++++
 conf/ipx.service.in            |  16 +
 conf/network-start.sh.in       | 176 ++++++++++
 conf/network-stop.sh.in        |  50 +++
 configure.ac                   |  15 +
 ipxripd/Makefile.in            |   1 +
 samples/Makefile.am            |  24 ++
 samples/Makefile.in            | 624 +++++++++++++++++++++++++++++++++
 {Samples => samples}/ipxrcv.c  |   6 +-
 {Samples => samples}/ipxsend.c |   2 +
 {Samples => samples}/rip.c     |  27 +-
 {Samples => samples}/samples.h |   0
 samples/sap.c                  | 104 ++++++
 src/Makefile.in                |   1 +
 tools/Makefile.in              |   1 +
 20 files changed, 1836 insertions(+), 110 deletions(-)
 delete mode 100644 Samples/sap.c
 create mode 100644 conf/Makefile.am
 create mode 100644 conf/Makefile.in
 create mode 100644 conf/ipx.confd.in
 create mode 100644 conf/ipx.service.in
 create mode 100644 conf/network-start.sh.in
 create mode 100644 conf/network-stop.sh.in
 create mode 100644 samples/Makefile.am
 create mode 100644 samples/Makefile.in
 rename {Samples => samples}/ipxrcv.c (90%)
 rename {Samples => samples}/ipxsend.c (97%)
 rename {Samples => samples}/rip.c (76%)
 rename {Samples => samples}/samples.h (100%)
 create mode 100644 samples/sap.c

diff --git a/.gitignore b/.gitignore
index f139568..2a368da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -57,3 +57,15 @@
 /ipx-utils-*.tar.bz2
 /ipx-utils-*.zip
 /ipx-utils-*/
+
+# generated config helper outputs
+/conf/ipx
+/conf/ipx.service
+/conf/network-start.sh
+/conf/network-stop.sh
+
+# sample binaries
+/samples/ipxrcv
+/samples/ipxsend
+/samples/rip
+/samples/sap
diff --git a/Makefile.am b/Makefile.am
index 1a8c9c7..8a7a88d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,16 +1,11 @@
 ACLOCAL_AMFLAGS = -I m4
 
-SUBDIRS = po src tools ipxripd
+SUBDIRS = po src tools samples ipxripd conf
 
 EXTRA_DIST = \
 	autogen.sh \
 	scripts/config.ipx \
-	scripts/init.ipx \
-	Samples/ipxrcv.c \
-	Samples/ipxsend.c \
-	Samples/rip.c \
-	Samples/sap.c \
-	Samples/samples.h
+	scripts/init.ipx
 
 DISTCLEANFILES = \
 	po/stamp-po
diff --git a/Samples/sap.c b/Samples/sap.c
deleted file mode 100644
index c7991d2..0000000
--- a/Samples/sap.c
+++ /dev/null
@@ -1,95 +0,0 @@
-#include "samples.h"
-
-struct sap_data
-{
-    uint16_t sap_type;
-    char     sap_name[48];
-    uint32_t sap_net;
-    uint8_t  sap_node[6];
-    uint16_t sap_sock;
-    uint16_t sap_hops;
-} __attribute__ ((packed));
-
-int main(int argc, char **argv)
-{
-	int s;
-	int result;
-	struct sockaddr_ipx sipx;
-	char msg[1024];
-	long val = 0;
-	char *bptr;
-	struct sap_data *sp;
-
-	s = socket(AF_IPX, SOCK_DGRAM, AF_IPX);
-	if (s < 0)
-	{
-		perror("IPX: socket: ");
-		exit(-1);
-	}
-	result = setsockopt(s, SOL_SOCKET, SO_DEBUG, &val, 4);
-	if (result < 0)
-	{
-		perror("IPX: setsockopt: ");
-		exit(-1);
-	}
-	sipx.sipx_family = PF_IPX;
-	sipx.sipx_network = 0L;
-	sipx.sipx_port = htons(0x452);
-	sipx.sipx_type = 17;
-
-	result = bind(s, (struct sockaddr *) &sipx, sizeof(sipx));
-	if (result < 0)
-	{
-		perror("IPX: bind: ");
-		exit(-1);
-	}
-	while (1)
-	{
-		socklen_t len;
-		size_t rclen;
-
-		len = 1024;
-		result = recvfrom(s, msg, sizeof(msg), 0,
-				  (struct sockaddr *) &sipx, &len);
-		if (result < 0)
-		{
-			perror("IPX: recvfrom: ");
-			exit(-1);
-		}
-		if (result < 2) {
-			fprintf(stderr, "Received packet is too short to be SAP packet (%d bytes)\n", result);
-			continue;
-		}
-		rclen = result - 2;
-		bptr = msg;
-		printf("SAP: OP is %x %x\n", bptr[0], bptr[1]);
-		printf("Length is %zu\n", rclen);
-		if (bptr[1] != 2)
-			continue;
-
-		bptr += 2;
-		sp = (struct sap_data *) bptr;
-		while (rclen >= sizeof(struct sap_data))
-		{
-			int i;
-
-			sp->sap_name[32] = '\0';
-			for (i = 31; (i > 0) && (sp->sap_name[i] == '_'); i--);
-			i++;
-			sp->sap_name[i] = '\0';
-			printf("NAME: %s TYPE: %x HOPS: %x\n", sp->sap_name,
-			       ntohs(sp->sap_type), ntohs(sp->sap_hops));
-			printf("%x:%x %x %x %x %x %x: %x\n",
-			       (u_int32_t)ntohl(sp->sap_net),
-			       sp->sap_node[0],
-			       sp->sap_node[1],
-			       sp->sap_node[2],
-			       sp->sap_node[3],
-			       sp->sap_node[4],
-			       sp->sap_node[5],
-			       ntohs(sp->sap_sock));
-			rclen -= sizeof(struct sap_data);
-			sp++;
-		}
-	}
-}
diff --git a/conf/Makefile.am b/conf/Makefile.am
new file mode 100644
index 0000000..0886ca2
--- /dev/null
+++ b/conf/Makefile.am
@@ -0,0 +1,43 @@
+ipxlibexecdir = $(libexecdir)/ipx
+confd_dir = $(sysconfdir)/conf.d
+
+edit = sed \
+	-e 's|@sbindir[@]|$(sbindir)|g' \
+	-e 's|@sysconfdir[@]|$(sysconfdir)|g' \
+	-e 's|@libexecdir[@]|$(libexecdir)|g' \
+	-e 's|@ipxlibexecdir[@]|$(ipxlibexecdir)|g' \
+	-e 's|@systemdsystemunitdir[@]|$(systemdsystemunitdir)|g'
+
+ipxlibexec_SCRIPTS = \
+	network-start.sh \
+	network-stop.sh
+
+confd__DATA = ipx
+
+if ENABLE_SYSTEMD
+systemdsystemunit_DATA = ipx.service
+endif
+
+network-start.sh: network-start.sh.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/network-start.sh.in > $@ && chmod +x $@
+
+network-stop.sh: network-stop.sh.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/network-stop.sh.in > $@ && chmod +x $@
+
+ipx.service: ipx.service.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/ipx.service.in > $@
+
+ipx: ipx.confd.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/ipx.confd.in > $@
+
+EXTRA_DIST = \
+	network-start.sh.in \
+	network-stop.sh.in \
+	ipx.service.in \
+	ipx.confd.in
+
+CLEANFILES = \
+	network-start.sh \
+	network-stop.sh \
+	ipx.service \
+	ipx
diff --git a/conf/Makefile.in b/conf/Makefile.in
new file mode 100644
index 0000000..20ca515
--- /dev/null
+++ b/conf/Makefile.in
@@ -0,0 +1,600 @@
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+
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+	$(top_srcdir)/m4/lib-link.m4 $(top_srcdir)/m4/lib-prefix.m4 \
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+confd_dir = $(sysconfdir)/conf.d
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+	-e 's|@sbindir[@]|$(sbindir)|g' \
+	-e 's|@sysconfdir[@]|$(sysconfdir)|g' \
+	-e 's|@libexecdir[@]|$(libexecdir)|g' \
+	-e 's|@ipxlibexecdir[@]|$(ipxlibexecdir)|g' \
+	-e 's|@systemdsystemunitdir[@]|$(systemdsystemunitdir)|g'
+
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+	network-start.sh \
+	network-stop.sh
+
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+@ENABLE_SYSTEMD_TRUE@systemdsystemunit_DATA = ipx.service
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+	network-start.sh.in \
+	network-stop.sh.in \
+	ipx.service.in \
+	ipx.confd.in
+
+CLEANFILES = \
+	network-start.sh \
+	network-stop.sh \
+	ipx.service \
+	ipx
+
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+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(ipxlibexecdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(ipxlibexecdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(ipxlibexecdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(ipxlibexecdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-ipxlibexecSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(ipxlibexec_SCRIPTS)'; test -n "$(ipxlibexecdir)" || exit 0; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	       sed -e 's,.*/,,;$(transform)'`; \
+	dir='$(DESTDIR)$(ipxlibexecdir)'; $(am__uninstall_files_from_dir)
+install-confd_DATA: $(confd__DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(confd__DATA)'; test -n "$(confd_dir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(confd_dir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(confd_dir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(confd_dir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(confd_dir)" || exit $$?; \
+	done
+
+uninstall-confd_DATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(confd__DATA)'; test -n "$(confd_dir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(confd_dir)'; $(am__uninstall_files_from_dir)
+install-systemdsystemunitDATA: $(systemdsystemunit_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(systemdsystemunit_DATA)'; test -n "$(systemdsystemunitdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(systemdsystemunitdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(systemdsystemunitdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(systemdsystemunitdir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(systemdsystemunitdir)" || exit $$?; \
+	done
+
+uninstall-systemdsystemunitDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(systemdsystemunit_DATA)'; test -n "$(systemdsystemunitdir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(systemdsystemunitdir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(ipxlibexecdir)" "$(DESTDIR)$(confd_dir)" "$(DESTDIR)$(systemdsystemunitdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-$(am__rm_f) $(CLEANFILES)
+
+distclean-generic:
+	-$(am__rm_f) $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || $(am__rm_f) $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-confd_DATA install-systemdsystemunitDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-ipxlibexecSCRIPTS
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-confd_DATA uninstall-ipxlibexecSCRIPTS \
+	uninstall-systemdsystemunitDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-confd_DATA \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-ipxlibexecSCRIPTS \
+	install-man install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip install-systemdsystemunitDATA \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am \
+	uninstall-confd_DATA uninstall-ipxlibexecSCRIPTS \
+	uninstall-systemdsystemunitDATA
+
+.PRECIOUS: Makefile
+
+
+network-start.sh: network-start.sh.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/network-start.sh.in > $@ && chmod +x $@
+
+network-stop.sh: network-stop.sh.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/network-stop.sh.in > $@ && chmod +x $@
+
+ipx.service: ipx.service.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/ipx.service.in > $@
+
+ipx: ipx.confd.in Makefile
+	$(AM_V_GEN)$(edit) $(srcdir)/ipx.confd.in > $@
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
+
+# Tell GNU make to disable its built-in pattern rules.
+%:: %,v
+%:: RCS/%,v
+%:: RCS/%
+%:: s.%
+%:: SCCS/s.%
diff --git a/conf/ipx.confd.in b/conf/ipx.confd.in
new file mode 100644
index 0000000..3ae3454
--- /dev/null
+++ b/conf/ipx.confd.in
@@ -0,0 +1,140 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# Configuration for the IPX network startup helpers.
+#
+# This file is used by:
+#   - /etc/init.d/ipx
+#   - @ipxlibexecdir@/network-start.sh
+#   - @ipxlibexecdir@/network-stop.sh
+#   - /etc/systemd/system/ipx.service
+#
+# Manual interface configuration:
+#   IPX_INTERFACES contains one entry per line.
+#
+# Format:
+#   <device>:<frame>:<netnum>
+#
+# Example:
+#   IPX_INTERFACES="
+#   enp0s31f6:802.2:1
+#   enp46s0u1u3u3:802.2:2
+#   wlp0s20f3:802.2:3
+#   "
+#
+# Behaviour:
+#   - The first successfully configured interface becomes the primary IPX
+#     interface.
+#   - Additional interfaces are configured as non-primary interfaces.
+#   - Each manually configured interface should use its own IPX network
+#     number.
+#   - Interfaces that are not currently present are skipped with a warning.
+#   - This is useful for optional hardware such as a docking station NIC.
+#
+# Link-state handling:
+#   If IPX_SKIP_LINK_DOWN=yes, interfaces that exist but currently do not
+#   have an active link are skipped as well.
+#
+# This is useful for cases such as:
+#   - a docking station NIC that exists but currently has no link
+#   - a physical Ethernet device with no cable attached
+#
+# Detection order:
+#   1. /sys/class/net/<if>/carrier
+#   2. /sys/class/net/<if>/operstate
+#
+# Example with an optional docking station interface:
+#   IPX_INTERFACES="
+#   enp46s0u1u3u3:802.2:1
+#   enp0s31f6:802.2:2
+#   wlp0s20f3:802.2:3
+#   "
+#
+# In that example:
+#   - if enp46s0u1u3u3 is present and usable, it will be configured first
+#     and become the primary IPX interface
+#   - if enp46s0u1u3u3 is missing, it will be skipped
+#   - if enp46s0u1u3u3 exists but has no active link and
+#     IPX_SKIP_LINK_DOWN=yes, it will also be skipped
+#   - the next successfully configured interface will become primary
+#
+# Static route configuration:
+#   IPX_ROUTES contains one entry per line.
+#
+# Format:
+#   <target_network>:<router_network>:<router_node>
+#
+# Example:
+#   IPX_ROUTES="
+#   00000010:00000001:508140F6AC45
+#   00000020:00000003:44E517C3D034
+#   "
+#
+# Route behaviour:
+#   - Routes are added after all interfaces have been configured
+#   - During shutdown, routes are removed again by target network
+#   - Empty lines and comment lines starting with '#' are ignored
+#
+# Automatic configuration:
+#   IPX_AUTO_PRIMARY and IPX_AUTO_INTERFACE are passed to ipx_configure.
+#
+# Recommended setting for manual interface definitions:
+#   - IPX_AUTO_INTERFACE=off
+#
+# This avoids mixing manual interface definitions with automatically created
+# IPX interfaces.
+#
+# Internal network mode:
+#   If IPX_INTERNAL_NET=yes, no physical interfaces from IPX_INTERFACES are
+#   configured.
+#
+#   Instead, an IPX internal network is created using IPX_NETNUM and
+#   IPX_NODENUM.
+#
+#   The internal network does not use a physical device or frame type and
+#   automatically becomes the primary IPX interface.
+#
+#   There can only be one internal network per host.
+
+# Automatically select a primary IPX interface.
+IPX_AUTO_PRIMARY=on
+
+# Automatically create IPX interfaces.
+# Recommended: off when using IPX_INTERFACES.
+IPX_AUTO_INTERFACE=off
+
+# Skip interfaces that are present but currently have no active link.
+# Valid values: yes / no
+IPX_SKIP_LINK_DOWN=yes
+
+# Create a special internal IPX network instead of binding to physical NICs.
+# Valid values: yes / no
+IPX_INTERNAL_NET=no
+
+# IPX network number for internal network mode only.
+IPX_NETNUM=1
+
+# IPX node number for internal network mode only.
+IPX_NODENUM=1
+
+# Manually configured IPX interfaces.
+# Format: <device>:<frame>:<netnum>
+#
+# The first successfully configured interface becomes primary.
+# Missing interfaces are skipped.
+IPX_INTERFACES="
+enp46s0u1u3u3:802.2:1
+enp0s31f6:802.2:2
+wlp0s20f3:802.2:3
+"
+
+# Static IPX routes.
+# Format: <target_network>:<router_network>:<router_node>
+#
+# Example:
+# IPX_ROUTES="
+# 00000010:00000001:508140F6AC45
+# 00000020:00000003:44E517C3D034
+# "
+IPX_ROUTES="
+"
diff --git a/conf/ipx.service.in b/conf/ipx.service.in
new file mode 100644
index 0000000..f0e4f36
--- /dev/null
+++ b/conf/ipx.service.in
@@ -0,0 +1,16 @@
+[Unit]
+Description=IPX network setup
+Documentation=man:systemd.service(5)
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+EnvironmentFile=@sysconfdir@/conf.d/ipx
+ExecStart=@ipxlibexecdir@/network-start.sh
+ExecStop=@ipxlibexecdir@/network-stop.sh
+ExecStopPost=@ipxlibexecdir@/network-stop.sh
+
+[Install]
+WantedBy=multi-user.target
diff --git a/conf/network-start.sh.in b/conf/network-start.sh.in
new file mode 100644
index 0000000..35fe036
--- /dev/null
+++ b/conf/network-start.sh.in
@@ -0,0 +1,176 @@
+#!/bin/sh
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# IPX start helper for systemd and OpenRC.
+#
+# This script reads its configuration from environment variables, typically
+# provided through /etc/conf.d/ipx.
+#
+# Manual interface format:
+#   <device>:<frame>:<netnum>
+#
+# Static route format:
+#   <target_network>:<router_network>:<router_node>
+#
+# Behaviour:
+#   - The first successfully configured interface becomes the primary IPX
+#     interface.
+#   - Missing interfaces are skipped.
+#   - Optionally, interfaces with no active link can also be skipped.
+#   - Static routes are added after interface configuration.
+
+set -u
+
+configured=0
+retval=0
+primary_set=0
+
+log_warn() {
+    printf '%s\n' "ipx: $*" >&2
+}
+
+log_err() {
+    printf '%s\n' "ipx: $*" >&2
+}
+
+link_is_usable() {
+    local dev carrier_file operstate_file state
+
+    dev=$1
+    carrier_file="/sys/class/net/${dev}/carrier"
+    operstate_file="/sys/class/net/${dev}/operstate"
+
+    if [ "${IPX_SKIP_LINK_DOWN:-no}" != "yes" ]; then
+	return 0
+    fi
+
+    if [ -r "${carrier_file}" ]; then
+	state=$(cat "${carrier_file}")
+	if [ "${state}" = "0" ]; then
+	    log_warn "interface ${dev} has no carrier, skipping"
+	    return 1
+	fi
+	return 0
+    fi
+
+    if [ -r "${operstate_file}" ]; then
+	state=$(cat "${operstate_file}")
+	case "${state}" in
+	    down)
+		log_warn "interface ${dev} is link-down, skipping"
+		return 1
+		;;
+	esac
+    fi
+
+    return 0
+}
+
+if [ "${IPX_INTERNAL_NET:-no}" = "yes" ]; then
+    if ! @sbindir@/ipx_internal_net add "${IPX_NETNUM}" "${IPX_NODENUM}"; then
+	log_err "failed to create internal IPX network"
+	retval=1
+    fi
+else
+    oldifs=${IFS}
+    IFS='
+'
+    for entry in ${IPX_INTERFACES:-}; do
+	[ -n "${entry}" ] || continue
+
+	case "${entry}" in
+	    \#*)
+		continue
+		;;
+	esac
+
+	dev=${entry%%:*}
+	rest=${entry#*:}
+	frame=${rest%%:*}
+	netnum=${rest#*:}
+
+	if [ -z "${dev}" ] || [ -z "${frame}" ] || [ -z "${netnum}" ] || [ "${rest}" = "${entry}" ]; then
+	    log_err "invalid IPX_INTERFACES entry: ${entry}"
+	    retval=1
+	    break
+	fi
+
+	if [ ! -d "/sys/class/net/${dev}" ]; then
+	    log_warn "interface ${dev} is not present, skipping"
+	    continue
+	fi
+
+	if ! link_is_usable "${dev}"; then
+	    continue
+	fi
+
+	if [ "${primary_set}" -eq 0 ]; then
+	    if @sbindir@/ipx_interface add -p "${dev}" "${frame}" "${netnum}"; then
+		configured=1
+		primary_set=1
+	    else
+		log_err "failed to add primary IPX interface on ${dev}"
+		retval=1
+	    fi
+	else
+	    if @sbindir@/ipx_interface add "${dev}" "${frame}" "${netnum}"; then
+		configured=1
+	    else
+		log_err "failed to add IPX interface on ${dev}"
+		retval=1
+	    fi
+	fi
+    done
+    IFS=${oldifs}
+
+    if [ "${configured}" -eq 0 ] && [ "${retval}" -eq 0 ]; then
+	log_warn "no configured IPX interfaces were present"
+    fi
+fi
+
+if [ "${retval}" -eq 0 ]; then
+    oldifs=${IFS}
+    IFS='
+'
+    for entry in ${IPX_ROUTES:-}; do
+	[ -n "${entry}" ] || continue
+
+	case "${entry}" in
+	    \#*)
+		continue
+		;;
+	esac
+
+	target=${entry%%:*}
+	rest=${entry#*:}
+	router_net=${rest%%:*}
+	router_node=${rest#*:}
+
+	if [ -z "${target}" ] || [ -z "${router_net}" ] || [ -z "${router_node}" ] || [ "${rest}" = "${entry}" ]; then
+	    log_err "invalid IPX_ROUTES entry: ${entry}"
+	    retval=1
+	    break
+	fi
+
+	if ! @sbindir@/ipx_route add "${target}" "${router_net}" "${router_node}"; then
+	    log_err "failed to add IPX route to ${target}"
+	    retval=1
+	fi
+    done
+    IFS=${oldifs}
+fi
+
+if ! @sbindir@/ipx_configure \
+    --auto_primary="${IPX_AUTO_PRIMARY}" \
+    --auto_interface="${IPX_AUTO_INTERFACE}"; then
+    log_err "failed to apply automatic IPX configuration"
+    retval=1
+fi
+
+if [ "${retval}" -ne 0 ]; then
+    log_warn "startup failed, cleaning up partial IPX configuration"
+    @ipxlibexecdir@/network-stop.sh || true
+fi
+
+exit "${retval}"
diff --git a/conf/network-stop.sh.in b/conf/network-stop.sh.in
new file mode 100644
index 0000000..957c7ff
--- /dev/null
+++ b/conf/network-stop.sh.in
@@ -0,0 +1,50 @@
+#!/bin/sh
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# IPX stop helper for systemd and OpenRC.
+#
+# This script disables automatic IPX behaviour, removes configured static
+# routes, removes all configured IPX interfaces and deletes the internal IPX
+# network if present.
+
+set -u
+
+retval=0
+
+oldifs=${IFS}
+IFS='
+'
+for entry in ${IPX_ROUTES:-}; do
+    [ -n "${entry}" ] || continue
+
+    case "${entry}" in
+	\#*)
+	    continue
+	    ;;
+    esac
+
+    target=${entry%%:*}
+
+    if ! @sbindir@/ipx_route del "${target}"; then
+	printf '%s\n' "ipx: failed to remove route to ${target}" >&2
+	retval=1
+    fi
+done
+IFS=${oldifs}
+
+if ! @sbindir@/ipx_configure --auto_primary=off --auto_interface=off; then
+    printf '%s\n' "ipx: failed to disable automatic IPX configuration" >&2
+    retval=1
+fi
+
+if ! @sbindir@/ipx_interface delall; then
+    printf '%s\n' "ipx: failed to remove IPX interfaces" >&2
+    retval=1
+fi
+
+if ! @sbindir@/ipx_internal_net del; then
+    :
+fi
+
+exit "${retval}"
diff --git a/configure.ac b/configure.ac
index 8e8f6b1..f783f96 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,11 +15,26 @@ AC_CHECK_FUNCS([gettext bindtextdomain textdomain])
 
 AC_DEFINE_UNQUOTED([LOCALEDIR], ["${datadir}/locale"], [Define location of message catalogs])
 
+
+AC_ARG_WITH([systemdsystemunitdir],
+	[AS_HELP_STRING([--with-systemdsystemunitdir=DIR],
+		[systemd system unit directory; use "no" to disable systemd unit installation])],
+	[systemdsystemunitdir="${withval}"],
+	[systemdsystemunitdir='${prefix}/lib/systemd/system'])
+
+AS_IF([test "x${systemdsystemunitdir}" = "xno"],
+	[systemdsystemunitdir=''])
+
+AC_SUBST([systemdsystemunitdir])
+AM_CONDITIONAL([ENABLE_SYSTEMD], [test "x${systemdsystemunitdir}" != "x"])
+
 AC_CONFIG_FILES([
 	Makefile
 	src/Makefile
 	tools/Makefile
 	ipxripd/Makefile
+	conf/Makefile
+	samples/Makefile
 	po/Makefile.in
 ])
 AC_OUTPUT
diff --git a/ipxripd/Makefile.in b/ipxripd/Makefile.in
index a038b91..5c61894 100644
--- a/ipxripd/Makefile.in
+++ b/ipxripd/Makefile.in
@@ -319,6 +319,7 @@ sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
 sysconfdir = @sysconfdir@
+systemdsystemunitdir = @systemdsystemunitdir@
 target_alias = @target_alias@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
diff --git a/samples/Makefile.am b/samples/Makefile.am
new file mode 100644
index 0000000..059a9bc
--- /dev/null
+++ b/samples/Makefile.am
@@ -0,0 +1,24 @@
+AM_CPPFLAGS = -I$(top_srcdir)
+AM_CFLAGS = -Wall -Wextra
+
+noinst_PROGRAMS = \
+	ipxrcv \
+	ipxsend \
+	rip \
+	sap
+
+ipxrcv_SOURCES = \
+	ipxrcv.c \
+	samples.h
+
+ipxsend_SOURCES = \
+	ipxsend.c \
+	samples.h
+
+rip_SOURCES = \
+	rip.c \
+	samples.h
+
+sap_SOURCES = \
+	sap.c \
+	samples.h
diff --git a/samples/Makefile.in b/samples/Makefile.in
new file mode 100644
index 0000000..0c8da82
--- /dev/null
+++ b/samples/Makefile.in
@@ -0,0 +1,624 @@
+# Makefile.in generated by automake 1.18.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2025 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+VPATH = @srcdir@
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+  else \
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+  fi; \
+}
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+      *) echo "am__make_running_with_option: internal error: invalid" \
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+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
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+host_triplet = @host@
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+	$(top_srcdir)/m4/intlmacosx.m4 $(top_srcdir)/m4/lib-ld.m4 \
+	$(top_srcdir)/m4/lib-link.m4 $(top_srcdir)/m4/lib-prefix.m4 \
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+	samples.h
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+	ipxsend.c \
+	samples.h
+
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+	rip.c \
+	samples.h
+
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+	sap.c \
+	samples.h
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .o .obj
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+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
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+	      exit 1;; \
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+	done; \
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+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign samples/Makefile
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	$(AM_V_CCLD)$(LINK) $(ipxrcv_OBJECTS) $(ipxrcv_LDADD) $(LIBS)
+
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+	@rm -f ipxsend$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(ipxsend_OBJECTS) $(ipxsend_LDADD) $(LIBS)
+
+rip$(EXEEXT): $(rip_OBJECTS) $(rip_DEPENDENCIES) $(EXTRA_rip_DEPENDENCIES) 
+	@rm -f rip$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(rip_OBJECTS) $(rip_LDADD) $(LIBS)
+
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+	@rm -f sap$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(sap_OBJECTS) $(sap_LDADD) $(LIBS)
+
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ipxrcv.Po@am__quote@ # am--include-marker
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+	@: >>$@
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+	esac; \
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+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
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+	done >> $(top_builddir)/cscope.files
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+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
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+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(PROGRAMS)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-$(am__rm_f) $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || $(am__rm_f) $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-noinstPROGRAMS mostlyclean-am
+
+distclean: distclean-am
+	-rm -f ./$(DEPDIR)/ipxrcv.Po
+	-rm -f ./$(DEPDIR)/ipxsend.Po
+	-rm -f ./$(DEPDIR)/rip.Po
+	-rm -f ./$(DEPDIR)/sap.Po
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f ./$(DEPDIR)/ipxrcv.Po
+	-rm -f ./$(DEPDIR)/ipxsend.Po
+	-rm -f ./$(DEPDIR)/rip.Po
+	-rm -f ./$(DEPDIR)/sap.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-noinstPROGRAMS cscopelist-am ctags \
+	ctags-am distclean distclean-compile distclean-generic \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
+
+# Tell GNU make to disable its built-in pattern rules.
+%:: %,v
+%:: RCS/%,v
+%:: RCS/%
+%:: s.%
+%:: SCCS/s.%
diff --git a/Samples/ipxrcv.c b/samples/ipxrcv.c
similarity index 90%
rename from Samples/ipxrcv.c
rename to samples/ipxrcv.c
index 0485af5..cd4241e 100644
--- a/Samples/ipxrcv.c
+++ b/samples/ipxrcv.c
@@ -2,9 +2,11 @@
 
 int main(int argc, char **argv)
 {
+	(void)argc;
+	(void)argv;
 	struct sockaddr_ipx sipx;
 	int s;
-	int rct;
+	int rc;
 	char msg[100];
 	socklen_t len;
 
@@ -32,7 +34,7 @@ int main(int argc, char **argv)
 	{
 		perror("IPX: recvfrom: ");
 	}
-	printf("From %08X:%02X%02X%02X%02X%02X%02X:%04X\n",
+	printf("From %08lX:%02X%02X%02X%02X%02X%02X:%04X\n",
 	       (unsigned long)ntohl(sipx.sipx_network),
 	       sipx.sipx_node[0], sipx.sipx_node[1],
 	       sipx.sipx_node[2], sipx.sipx_node[3],
diff --git a/Samples/ipxsend.c b/samples/ipxsend.c
similarity index 97%
rename from Samples/ipxsend.c
rename to samples/ipxsend.c
index 6fc6341..1b33081 100644
--- a/Samples/ipxsend.c
+++ b/samples/ipxsend.c
@@ -2,6 +2,8 @@
 
 int main(int argc, char **argv)
 {
+	(void)argc;
+	(void)argv;
 	struct sockaddr_ipx sipx;
 	int s;
 	int rc;
diff --git a/Samples/rip.c b/samples/rip.c
similarity index 76%
rename from Samples/rip.c
rename to samples/rip.c
index fb1eb78..b7e80ec 100644
--- a/Samples/rip.c
+++ b/samples/rip.c
@@ -16,22 +16,28 @@ int main(int argc, char **argv)
 	char *bptr;
 	struct rip_data *rp;
 
+	(void)argc;
+	(void)argv;
+
 	s = socket(AF_IPX, SOCK_DGRAM, AF_IPX);
 	if (s < 0)
 	{
 		perror("IPX: socket: ");
 		exit(-1);
 	}
+
 	sipx.sipx_family = AF_IPX;
 	sipx.sipx_network = 0;
 	sipx.sipx_port = htons(0x453);
 	sipx.sipx_type = 17;
+
 	result = bind(s, (struct sockaddr *) &sipx, sizeof(sipx));
 	if (result < 0)
 	{
 		perror("IPX: bind: ");
 		exit(-1);
 	}
+
 	while (1)
 	{
 		socklen_t len;
@@ -45,22 +51,31 @@ int main(int argc, char **argv)
 			perror("IPX: recvfrom");
 			exit(-1);
 		}
-		if (result < 2) {
-			fprintf(stderr, "Received packet is too short to be RIP packet (%d bytes)\n", result);
+
+		if (result < 2)
+		{
+			fprintf(stderr,
+				"Received packet is too short to be RIP packet (%d bytes)\n",
+				result);
 			continue;
 		}
-		rclen = result - 2;
+
+		rclen = (size_t)result - 2;
 		bptr = msg;
+
 		printf("RIP packet from: %08X:%02X%02X%02X%02X%02X%02X\n",
-		       (u_int32_t)htonl(sipx.sipx_network),
+		       (uint32_t)ntohl(sipx.sipx_network),
 		       sipx.sipx_node[0], sipx.sipx_node[1],
 		       sipx.sipx_node[2], sipx.sipx_node[3],
-		       sipx.sipx_node[6], sipx.sipx_node[5]);
+		       sipx.sipx_node[4], sipx.sipx_node[5]);
+
 		bptr += 2;
 		rp = (struct rip_data *) bptr;
+
 		while (rclen >= sizeof(struct rip_data))
 		{
-			printf("\tNET: %08X HOPS: %d\n", (u_int32_t)ntohl(rp->rip_net),
+			printf("\tNET: %08X HOPS: %d\n",
+			       (uint32_t)ntohl(rp->rip_net),
 			       ntohs(rp->rip_hops));
 			rclen -= sizeof(struct rip_data);
 			rp++;
diff --git a/Samples/samples.h b/samples/samples.h
similarity index 100%
rename from Samples/samples.h
rename to samples/samples.h
diff --git a/samples/sap.c b/samples/sap.c
new file mode 100644
index 0000000..46ef10c
--- /dev/null
+++ b/samples/sap.c
@@ -0,0 +1,104 @@
+#include "samples.h"
+
+struct sap_data
+{
+	uint16_t sap_type;
+	char sap_name[48];
+	uint32_t sap_net;
+	unsigned char sap_node[6];
+	uint16_t sap_sock;
+	uint16_t sap_hops;
+} __attribute__ ((packed));
+
+int main(int argc, char **argv)
+{
+	struct sockaddr_ipx sipx;
+	int result;
+	int s;
+	char msg[1024];
+	char *bptr;
+	struct sap_data *sp;
+
+	(void)argc;
+	(void)argv;
+
+	s = socket(AF_IPX, SOCK_DGRAM, AF_IPX);
+	if (s < 0)
+	{
+		perror("IPX: socket: ");
+		exit(-1);
+	}
+
+	sipx.sipx_family = AF_IPX;
+	sipx.sipx_network = 0;
+	sipx.sipx_port = htons(0x452);
+	sipx.sipx_type = 0x4;
+
+	result = bind(s, (struct sockaddr *) &sipx, sizeof(sipx));
+	if (result < 0)
+	{
+		perror("IPX: bind: ");
+		exit(-1);
+	}
+
+	while (1)
+	{
+		socklen_t len;
+		size_t rclen;
+
+		len = sizeof(sipx);
+		result = recvfrom(s, msg, sizeof(msg), 0,
+				  (struct sockaddr *) &sipx, &len);
+		if (result < 0)
+		{
+			perror("IPX: recvfrom");
+			exit(-1);
+		}
+
+		if (result < 2)
+		{
+			fprintf(stderr,
+				"Received packet is too short to be SAP packet (%d bytes)\n",
+				result);
+			continue;
+		}
+
+		rclen = (size_t)result - 2;
+		bptr = msg;
+
+		printf("SAP packet from: %08X:%02X%02X%02X%02X%02X%02X\n",
+		       (uint32_t)ntohl(sipx.sipx_network),
+		       sipx.sipx_node[0], sipx.sipx_node[1],
+		       sipx.sipx_node[2], sipx.sipx_node[3],
+		       sipx.sipx_node[4], sipx.sipx_node[5]);
+
+		bptr += 2;
+		sp = (struct sap_data *) bptr;
+
+		while (rclen >= sizeof(struct sap_data))
+		{
+			int i;
+
+			/* Keep output readable if the SAP name is blank-padded. */
+			sp->sap_name[47] = '\0';
+			for (i = 46; i > 0 && sp->sap_name[i] == '_'; i--)
+				;
+			sp->sap_name[i + 1] = '\0';
+
+			printf("NAME: %s TYPE: %x HOPS: %x\n",
+			       sp->sap_name,
+			       ntohs(sp->sap_type),
+			       ntohs(sp->sap_hops));
+
+			printf("\tADDR: %08X:%02X%02X%02X%02X%02X%02X:%04X\n",
+			       (uint32_t)ntohl(sp->sap_net),
+			       sp->sap_node[0], sp->sap_node[1],
+			       sp->sap_node[2], sp->sap_node[3],
+			       sp->sap_node[4], sp->sap_node[5],
+			       ntohs(sp->sap_sock));
+
+			rclen -= sizeof(struct sap_data);
+			sp++;
+		}
+	}
+}
diff --git a/src/Makefile.in b/src/Makefile.in
index 179e962..b662f44 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -330,6 +330,7 @@ sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
 sysconfdir = @sysconfdir@
+systemdsystemunitdir = @systemdsystemunitdir@
 target_alias = @target_alias@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
diff --git a/tools/Makefile.in b/tools/Makefile.in
index ccbace4..e287c07 100644
--- a/tools/Makefile.in
+++ b/tools/Makefile.in
@@ -313,6 +313,7 @@ sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
 sysconfdir = @sysconfdir@
+systemdsystemunitdir = @systemdsystemunitdir@
 target_alias = @target_alias@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@