[PATCH net-next, v3] selftest: Add selftest for multicast address notifications

[PATCH net-next, v3] selftest: Add selftest for multicast address notifications

[Yuyang Huang]

This commit adds a new kernel selftest to verify RTNLGRP_IPV4_MCADDR
and RTNLGRP_IPV6_MCADDR notifications. The test works by adding and
removing a dummy interface and then confirming that the system
correctly receives join and removal notifications for the 224.0.0.1
and ff02::1 multicast addresses.

The test relies on the iproute2 version to be 6.13+.

Tested by the following command:
$ vng -v --user root --cpus 16 -- \
make -C tools/testing/selftests TARGETS=net
TEST_PROGS=rtnetlink_notification.sh \
TEST_GEN_PROGS="" run_tests

Cc: Maciej Żenczykowski <maze@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Yuyang Huang <yuyanghuang@google.com>
---

Changelog since v2:
- Move the test case to a separate file.

Changelog since v1:
- Skip the test if the iproute2 is too old.

 tools/testing/selftests/net/Makefile          |   1 +
 .../selftests/net/rtnetlink_notification.sh   | 159 ++++++++++++++++++
 2 files changed, 160 insertions(+)
 create mode 100755 tools/testing/selftests/net/rtnetlink_notification.sh

diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 70a38f485d4d..ad258b25bc9d 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -40,6 +40,7 @@ TEST_PROGS += netns-name.sh
 TEST_PROGS += link_netns.py
 TEST_PROGS += nl_netdev.py
 TEST_PROGS += rtnetlink.py
+TEST_PROGS += rtnetlink_notification.sh
 TEST_PROGS += srv6_end_dt46_l3vpn_test.sh
 TEST_PROGS += srv6_end_dt4_l3vpn_test.sh
 TEST_PROGS += srv6_end_dt6_l3vpn_test.sh
diff --git a/tools/testing/selftests/net/rtnetlink_notification.sh b/tools/testing/selftests/net/rtnetlink_notification.sh
new file mode 100755
index 000000000000..a2c1afed5023
--- /dev/null
+++ b/tools/testing/selftests/net/rtnetlink_notification.sh
@@ -0,0 +1,159 @@
+#!/bin/bash
+#
+# This test is for checking rtnetlink notification callpaths, and get as much
+# coverage as possible.
+#
+# set -e
+
+ALL_TESTS="
+	kci_test_mcast_addr_notification
+"
+
+VERBOSE=0
+PAUSE=no
+PAUSE_ON_FAIL=no
+
+source lib.sh
+
+# set global exit status, but never reset nonzero one.
+check_err()
+{
+	if [ $ret -eq 0 ]; then
+		ret=$1
+	fi
+	[ -n "$2" ] && echo "$2"
+}
+
+run_cmd_common()
+{
+	local cmd="$*"
+	local out
+	if [ "$VERBOSE" = "1" ]; then
+		echo "COMMAND: ${cmd}"
+	fi
+	out=$($cmd 2>&1)
+	rc=$?
+	if [ "$VERBOSE" = "1" -a -n "$out" ]; then
+		echo "    $out"
+	fi
+	return $rc
+}
+
+run_cmd() {
+	run_cmd_common "$@"
+	rc=$?
+	check_err $rc
+	return $rc
+}
+
+end_test()
+{
+	echo "$*"
+	[ "${VERBOSE}" = "1" ] && echo
+
+	if [[ $ret -ne 0 ]] && [[ "${PAUSE_ON_FAIL}" = "yes" ]]; then
+		echo "Hit enter to continue"
+		read a
+	fi;
+
+	if [ "${PAUSE}" = "yes" ]; then
+		echo "Hit enter to continue"
+		read a
+	fi
+
+}
+
+kci_test_mcast_addr_notification()
+{
+	local tmpfile
+	local monitor_pid
+	local match_result
+
+	tmpfile=$(mktemp)
+
+	ip monitor maddr > $tmpfile &
+	monitor_pid=$!
+	sleep 1
+	if [ ! -e "/proc/$monitor_pid" ]; then
+		end_test "SKIP: mcast addr notification: iproute2 too old"
+		rm $tmpfile
+		return $ksft_skip
+	fi
+
+	run_cmd ip link add name test-dummy1 type dummy
+	run_cmd ip link set test-dummy1 up
+	run_cmd ip link del dev test-dummy1
+	sleep 1
+
+	match_result=$(grep -cE "test-dummy1.*(224.0.0.1|ff02::1)" $tmpfile)
+
+	kill $monitor_pid
+	rm $tmpfile
+	# There should be 4 line matches as follows.
+	# 13: test-dummy1    inet6 mcast ff02::1 scope global 
+	# 13: test-dummy1    inet mcast 224.0.0.1 scope global 
+	# Deleted 13: test-dummy1    inet mcast 224.0.0.1 scope global 
+	# Deleted 13: test-dummy1    inet6 mcast ff02::1 scope global 
+	if [ $match_result -ne 4 ];then
+		end_test "FAIL: mcast addr notification"
+		return 1
+	fi
+	end_test "PASS: mcast addr notification"
+}
+
+kci_test_rtnl()
+{
+	local current_test
+	local ret=0
+
+	for current_test in ${TESTS:-$ALL_TESTS}; do
+		$current_test
+		check_err $?
+	done
+
+	return $ret
+}
+
+usage()
+{
+	cat <<EOF
+usage: ${0##*/} OPTS
+
+        -t <test>   Test(s) to run (default: all)
+                    (options: $(echo $ALL_TESTS))
+        -v          Verbose mode (show commands and output)
+        -P          Pause after every test
+        -p          Pause after every failing test before cleanup (for debugging)
+EOF
+}
+
+#check for needed privileges
+if [ "$(id -u)" -ne 0 ];then
+	end_test "SKIP: Need root privileges"
+	exit $ksft_skip
+fi
+
+for x in ip;do
+	$x -Version 2>/dev/null >/dev/null
+	if [ $? -ne 0 ];then
+		end_test "SKIP: Could not run test without the $x tool"
+		exit $ksft_skip
+	fi
+done
+
+while getopts t:hvpP o; do
+	case $o in
+		t) TESTS=$OPTARG;;
+		v) VERBOSE=1;;
+		p) PAUSE_ON_FAIL=yes;;
+		P) PAUSE=yes;;
+		h) usage; exit 0;;
+		*) usage; exit 1;;
+	esac
+done
+
+[ $PAUSE = "yes" ] && PAUSE_ON_FAIL="no"
+
+kci_test_rtnl
+
+exit $?
-- 
2.50.0.rc1.591.g9c95f17f64-goog

Re: [PATCH net-next, v3] selftest: Add selftest for multicast address notifications

[Jakub Kicinski]

On Thu, 12 Jun 2025 11:05:14 +0900 Yuyang Huang wrote:
> +VERBOSE=0
> +PAUSE=no
> +PAUSE_ON_FAIL=no
> +
> +source lib.sh
> +
> +# set global exit status, but never reset nonzero one.
> +check_err()
> +{
> +	if [ $ret -eq 0 ]; then
> +		ret=$1
> +	fi
> +	[ -n "$2" ] && echo "$2"
> +}
> +
> +run_cmd_common()
> +{
> +	local cmd="$*"
> +	local out
> +	if [ "$VERBOSE" = "1" ]; then
> +		echo "COMMAND: ${cmd}"
> +	fi
> +	out=$($cmd 2>&1)
> +	rc=$?
> +	if [ "$VERBOSE" = "1" -a -n "$out" ]; then
> +		echo "    $out"
> +	fi
> +	return $rc
> +}
> +
> +run_cmd() {
> +	run_cmd_common "$@"
> +	rc=$?
> +	check_err $rc
> +	return $rc
> +}
> +
> +end_test()
> +{
> +	echo "$*"
> +	[ "${VERBOSE}" = "1" ] && echo
> +
> +	if [[ $ret -ne 0 ]] && [[ "${PAUSE_ON_FAIL}" = "yes" ]]; then
> +		echo "Hit enter to continue"
> +		read a
> +	fi;
> +
> +	if [ "${PAUSE}" = "yes" ]; then
> +		echo "Hit enter to continue"
> +		read a
> +	fi
> +
> +}

Perhaps move these to lib.sh as a separate commit?
They seem generic.

Please fix the shellcheck warnings. The "info"-level messages 
are up you, SC2317 can be ignored.
-- 
pw-bot: cr

Re: [PATCH net-next, v3] selftest: Add selftest for multicast address notifications

[Yuyang Huang]

Thanks for the suggestion.

>Perhaps move these to lib.sh as a separate commit?
>They seem generic.

I am looking at the existing test cases, and it seems that each case
is doing its own way of handling the end_test()/run_cmd(). It's
non-trivial to unify everything into lib.sh, and it seems to be a huge
refactor if we want to do it this way. I can also imagine each test
case might want to customize the behavior a little bit differently.

On the other hand, it seems some of the helper functions I copied over
can be simplified. I will refactor the code a little bit to reduce the
duplication.

Thanks,
Yuyang


On Sat, Jun 14, 2025 at 9:29 AM Jakub Kicinski <kuba@kernel.org> wrote:
>
> On Thu, 12 Jun 2025 11:05:14 +0900 Yuyang Huang wrote:
> > +VERBOSE=0
> > +PAUSE=no
> > +PAUSE_ON_FAIL=no
> > +
> > +source lib.sh
> > +
> > +# set global exit status, but never reset nonzero one.
> > +check_err()
> > +{
> > +     if [ $ret -eq 0 ]; then
> > +             ret=$1
> > +     fi
> > +     [ -n "$2" ] && echo "$2"
> > +}
> > +
> > +run_cmd_common()
> > +{
> > +     local cmd="$*"
> > +     local out
> > +     if [ "$VERBOSE" = "1" ]; then
> > +             echo "COMMAND: ${cmd}"
> > +     fi
> > +     out=$($cmd 2>&1)
> > +     rc=$?
> > +     if [ "$VERBOSE" = "1" -a -n "$out" ]; then
> > +             echo "    $out"
> > +     fi
> > +     return $rc
> > +}
> > +
> > +run_cmd() {
> > +     run_cmd_common "$@"
> > +     rc=$?
> > +     check_err $rc
> > +     return $rc
> > +}
> > +
> > +end_test()
> > +{
> > +     echo "$*"
> > +     [ "${VERBOSE}" = "1" ] && echo
> > +
> > +     if [[ $ret -ne 0 ]] && [[ "${PAUSE_ON_FAIL}" = "yes" ]]; then
> > +             echo "Hit enter to continue"
> > +             read a
> > +     fi;
> > +
> > +     if [ "${PAUSE}" = "yes" ]; then
> > +             echo "Hit enter to continue"
> > +             read a
> > +     fi
> > +
> > +}
>
> Perhaps move these to lib.sh as a separate commit?
> They seem generic.
>
> Please fix the shellcheck warnings. The "info"-level messages
> are up you, SC2317 can be ignored.
> --
> pw-bot: cr

[PATCH net-next, v3] selftest: Add selftest for multicast address notifications

[Yuyang Huang]

This commit adds a new kernel selftest to verify RTNLGRP_IPV4_MCADDR
and RTNLGRP_IPV6_MCADDR notifications. The test works by adding and
removing a dummy interface and then confirming that the system
correctly receives join and removal notifications for the 224.0.0.1
and ff02::1 multicast addresses.

The test relies on the iproute2 version to be 6.13+.

Tested by the following command:
$ vng -v --user root --cpus 16 -- \
make -C tools/testing/selftests TARGETS=net
TEST_PROGS=rtnetlink_notification.sh \
TEST_GEN_PROGS="" run_tests

Cc: Maciej Żenczykowski <maze@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Yuyang Huang <yuyanghuang@google.com>
---

Changelog since v2:
- Move the test cases to a separate file.

Changelog since v1:
- Skip the test if the iproute2 is too old.

 tools/testing/selftests/net/Makefile          |   1 +
 .../selftests/net/rtnetlink_notification.sh   | 159 ++++++++++++++++++
 2 files changed, 160 insertions(+)
 create mode 100755 tools/testing/selftests/net/rtnetlink_notification.sh

diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 70a38f485d4d..ad258b25bc9d 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -40,6 +40,7 @@ TEST_PROGS += netns-name.sh
 TEST_PROGS += link_netns.py
 TEST_PROGS += nl_netdev.py
 TEST_PROGS += rtnetlink.py
+TEST_PROGS += rtnetlink_notification.sh
 TEST_PROGS += srv6_end_dt46_l3vpn_test.sh
 TEST_PROGS += srv6_end_dt4_l3vpn_test.sh
 TEST_PROGS += srv6_end_dt6_l3vpn_test.sh
diff --git a/tools/testing/selftests/net/rtnetlink_notification.sh b/tools/testing/selftests/net/rtnetlink_notification.sh
new file mode 100755
index 000000000000..a2c1afed5023
--- /dev/null
+++ b/tools/testing/selftests/net/rtnetlink_notification.sh
@@ -0,0 +1,159 @@
+#!/bin/bash
+#
+# This test is for checking rtnetlink notification callpaths, and get as much
+# coverage as possible.
+#
+# set -e
+
+ALL_TESTS="
+	kci_test_mcast_addr_notification
+"
+
+VERBOSE=0
+PAUSE=no
+PAUSE_ON_FAIL=no
+
+source lib.sh
+
+# set global exit status, but never reset nonzero one.
+check_err()
+{
+	if [ $ret -eq 0 ]; then
+		ret=$1
+	fi
+	[ -n "$2" ] && echo "$2"
+}
+
+run_cmd_common()
+{
+	local cmd="$*"
+	local out
+	if [ "$VERBOSE" = "1" ]; then
+		echo "COMMAND: ${cmd}"
+	fi
+	out=$($cmd 2>&1)
+	rc=$?
+	if [ "$VERBOSE" = "1" -a -n "$out" ]; then
+		echo "    $out"
+	fi
+	return $rc
+}
+
+run_cmd() {
+	run_cmd_common "$@"
+	rc=$?
+	check_err $rc
+	return $rc
+}
+
+end_test()
+{
+	echo "$*"
+	[ "${VERBOSE}" = "1" ] && echo
+
+	if [[ $ret -ne 0 ]] && [[ "${PAUSE_ON_FAIL}" = "yes" ]]; then
+		echo "Hit enter to continue"
+		read a
+	fi;
+
+	if [ "${PAUSE}" = "yes" ]; then
+		echo "Hit enter to continue"
+		read a
+	fi
+
+}
+
+kci_test_mcast_addr_notification()
+{
+	local tmpfile
+	local monitor_pid
+	local match_result
+
+	tmpfile=$(mktemp)
+
+	ip monitor maddr > $tmpfile &
+	monitor_pid=$!
+	sleep 1
+	if [ ! -e "/proc/$monitor_pid" ]; then
+		end_test "SKIP: mcast addr notification: iproute2 too old"
+		rm $tmpfile
+		return $ksft_skip
+	fi
+
+	run_cmd ip link add name test-dummy1 type dummy
+	run_cmd ip link set test-dummy1 up
+	run_cmd ip link del dev test-dummy1
+	sleep 1
+
+	match_result=$(grep -cE "test-dummy1.*(224.0.0.1|ff02::1)" $tmpfile)
+
+	kill $monitor_pid
+	rm $tmpfile
+	# There should be 4 line matches as follows.
+	# 13: test-dummy1    inet6 mcast ff02::1 scope global 
+	# 13: test-dummy1    inet mcast 224.0.0.1 scope global 
+	# Deleted 13: test-dummy1    inet mcast 224.0.0.1 scope global 
+	# Deleted 13: test-dummy1    inet6 mcast ff02::1 scope global 
+	if [ $match_result -ne 4 ];then
+		end_test "FAIL: mcast addr notification"
+		return 1
+	fi
+	end_test "PASS: mcast addr notification"
+}
+
+kci_test_rtnl()
+{
+	local current_test
+	local ret=0
+
+	for current_test in ${TESTS:-$ALL_TESTS}; do
+		$current_test
+		check_err $?
+	done
+
+	return $ret
+}
+
+usage()
+{
+	cat <<EOF
+usage: ${0##*/} OPTS
+
+        -t <test>   Test(s) to run (default: all)
+                    (options: $(echo $ALL_TESTS))
+        -v          Verbose mode (show commands and output)
+        -P          Pause after every test
+        -p          Pause after every failing test before cleanup (for debugging)
+EOF
+}
+
+#check for needed privileges
+if [ "$(id -u)" -ne 0 ];then
+	end_test "SKIP: Need root privileges"
+	exit $ksft_skip
+fi
+
+for x in ip;do
+	$x -Version 2>/dev/null >/dev/null
+	if [ $? -ne 0 ];then
+		end_test "SKIP: Could not run test without the $x tool"
+		exit $ksft_skip
+	fi
+done
+
+while getopts t:hvpP o; do
+	case $o in
+		t) TESTS=$OPTARG;;
+		v) VERBOSE=1;;
+		p) PAUSE_ON_FAIL=yes;;
+		P) PAUSE=yes;;
+		h) usage; exit 0;;
+		*) usage; exit 1;;
+	esac
+done
+
+[ $PAUSE = "yes" ] && PAUSE_ON_FAIL="no"
+
+kci_test_rtnl
+
+exit $?
-- 
2.50.0.rc1.591.g9c95f17f64-goog

Re: [PATCH net-next, v3] selftest: Add selftest for multicast address notifications

[Yuyang Huang]

Sorry, please ignore this patch. Accidentally send the old patch again.....


On Wed, Jun 18, 2025 at 7:32 PM Yuyang Huang <yuyanghuang@google.com> wrote:
>
> This commit adds a new kernel selftest to verify RTNLGRP_IPV4_MCADDR
> and RTNLGRP_IPV6_MCADDR notifications. The test works by adding and
> removing a dummy interface and then confirming that the system
> correctly receives join and removal notifications for the 224.0.0.1
> and ff02::1 multicast addresses.
>
> The test relies on the iproute2 version to be 6.13+.
>
> Tested by the following command:
> $ vng -v --user root --cpus 16 -- \
> make -C tools/testing/selftests TARGETS=net
> TEST_PROGS=rtnetlink_notification.sh \
> TEST_GEN_PROGS="" run_tests
>
> Cc: Maciej Żenczykowski <maze@google.com>
> Cc: Lorenzo Colitti <lorenzo@google.com>
> Signed-off-by: Yuyang Huang <yuyanghuang@google.com>
> ---
>
> Changelog since v2:
> - Move the test cases to a separate file.
>
> Changelog since v1:
> - Skip the test if the iproute2 is too old.
>
>  tools/testing/selftests/net/Makefile          |   1 +
>  .../selftests/net/rtnetlink_notification.sh   | 159 ++++++++++++++++++
>  2 files changed, 160 insertions(+)
>  create mode 100755 tools/testing/selftests/net/rtnetlink_notification.sh
>
> diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
> index 70a38f485d4d..ad258b25bc9d 100644
> --- a/tools/testing/selftests/net/Makefile
> +++ b/tools/testing/selftests/net/Makefile
> @@ -40,6 +40,7 @@ TEST_PROGS += netns-name.sh
>  TEST_PROGS += link_netns.py
>  TEST_PROGS += nl_netdev.py
>  TEST_PROGS += rtnetlink.py
> +TEST_PROGS += rtnetlink_notification.sh
>  TEST_PROGS += srv6_end_dt46_l3vpn_test.sh
>  TEST_PROGS += srv6_end_dt4_l3vpn_test.sh
>  TEST_PROGS += srv6_end_dt6_l3vpn_test.sh
> diff --git a/tools/testing/selftests/net/rtnetlink_notification.sh b/tools/testing/selftests/net/rtnetlink_notification.sh
> new file mode 100755
> index 000000000000..a2c1afed5023
> --- /dev/null
> +++ b/tools/testing/selftests/net/rtnetlink_notification.sh
> @@ -0,0 +1,159 @@
> +#!/bin/bash
> +#
> +# This test is for checking rtnetlink notification callpaths, and get as much
> +# coverage as possible.
> +#
> +# set -e
> +
> +ALL_TESTS="
> +       kci_test_mcast_addr_notification
> +"
> +
> +VERBOSE=0
> +PAUSE=no
> +PAUSE_ON_FAIL=no
> +
> +source lib.sh
> +
> +# set global exit status, but never reset nonzero one.
> +check_err()
> +{
> +       if [ $ret -eq 0 ]; then
> +               ret=$1
> +       fi
> +       [ -n "$2" ] && echo "$2"
> +}
> +
> +run_cmd_common()
> +{
> +       local cmd="$*"
> +       local out
> +       if [ "$VERBOSE" = "1" ]; then
> +               echo "COMMAND: ${cmd}"
> +       fi
> +       out=$($cmd 2>&1)
> +       rc=$?
> +       if [ "$VERBOSE" = "1" -a -n "$out" ]; then
> +               echo "    $out"
> +       fi
> +       return $rc
> +}
> +
> +run_cmd() {
> +       run_cmd_common "$@"
> +       rc=$?
> +       check_err $rc
> +       return $rc
> +}
> +
> +end_test()
> +{
> +       echo "$*"
> +       [ "${VERBOSE}" = "1" ] && echo
> +
> +       if [[ $ret -ne 0 ]] && [[ "${PAUSE_ON_FAIL}" = "yes" ]]; then
> +               echo "Hit enter to continue"
> +               read a
> +       fi;
> +
> +       if [ "${PAUSE}" = "yes" ]; then
> +               echo "Hit enter to continue"
> +               read a
> +       fi
> +
> +}
> +
> +kci_test_mcast_addr_notification()
> +{
> +       local tmpfile
> +       local monitor_pid
> +       local match_result
> +
> +       tmpfile=$(mktemp)
> +
> +       ip monitor maddr > $tmpfile &
> +       monitor_pid=$!
> +       sleep 1
> +       if [ ! -e "/proc/$monitor_pid" ]; then
> +               end_test "SKIP: mcast addr notification: iproute2 too old"
> +               rm $tmpfile
> +               return $ksft_skip
> +       fi
> +
> +       run_cmd ip link add name test-dummy1 type dummy
> +       run_cmd ip link set test-dummy1 up
> +       run_cmd ip link del dev test-dummy1
> +       sleep 1
> +
> +       match_result=$(grep -cE "test-dummy1.*(224.0.0.1|ff02::1)" $tmpfile)
> +
> +       kill $monitor_pid
> +       rm $tmpfile
> +       # There should be 4 line matches as follows.
> +       # 13: test-dummy1    inet6 mcast ff02::1 scope global
> +       # 13: test-dummy1    inet mcast 224.0.0.1 scope global
> +       # Deleted 13: test-dummy1    inet mcast 224.0.0.1 scope global
> +       # Deleted 13: test-dummy1    inet6 mcast ff02::1 scope global
> +       if [ $match_result -ne 4 ];then
> +               end_test "FAIL: mcast addr notification"
> +               return 1
> +       fi
> +       end_test "PASS: mcast addr notification"
> +}
> +
> +kci_test_rtnl()
> +{
> +       local current_test
> +       local ret=0
> +
> +       for current_test in ${TESTS:-$ALL_TESTS}; do
> +               $current_test
> +               check_err $?
> +       done
> +
> +       return $ret
> +}
> +
> +usage()
> +{
> +       cat <<EOF
> +usage: ${0##*/} OPTS
> +
> +        -t <test>   Test(s) to run (default: all)
> +                    (options: $(echo $ALL_TESTS))
> +        -v          Verbose mode (show commands and output)
> +        -P          Pause after every test
> +        -p          Pause after every failing test before cleanup (for debugging)
> +EOF
> +}
> +
> +#check for needed privileges
> +if [ "$(id -u)" -ne 0 ];then
> +       end_test "SKIP: Need root privileges"
> +       exit $ksft_skip
> +fi
> +
> +for x in ip;do
> +       $x -Version 2>/dev/null >/dev/null
> +       if [ $? -ne 0 ];then
> +               end_test "SKIP: Could not run test without the $x tool"
> +               exit $ksft_skip
> +       fi
> +done
> +
> +while getopts t:hvpP o; do
> +       case $o in
> +               t) TESTS=$OPTARG;;
> +               v) VERBOSE=1;;
> +               p) PAUSE_ON_FAIL=yes;;
> +               P) PAUSE=yes;;
> +               h) usage; exit 0;;
> +               *) usage; exit 1;;
> +       esac
> +done
> +
> +[ $PAUSE = "yes" ] && PAUSE_ON_FAIL="no"
> +
> +kci_test_rtnl
> +
> +exit $?
> --
> 2.50.0.rc1.591.g9c95f17f64-goog
>