--- /dev/null
+ 3 TCPv6 SOCK state=listen laddr=[::1]:34567 listen stream 1 ::1 :: [::1]:34567 34567 [::]:0 0
+ 4 TCPv6 SOCK state=established laddr=[::1]:23456 raddr=[::1]:34567 established stream 0 ::1 ::1 [::1]:23456 23456 [::1]:34567 34567
+ 5 TCPv6 SOCK state=established laddr=[::1]:34567 raddr=[::1]:23456 established stream 0 ::1 ::1 [::1]:34567 34567 [::1]:23456 23456
+ASSOC,TYPE,STTYPE,NAME,SOCK.STATE,SOCK.TYPE,SOCK.LISTENING,INET6.LADDR,INET6.RADDR,TCP.LADDR,TCP.LPORT,TCP.RADDR,TCP.RPORT: 0
--- /dev/null
+#!/bin/bash
+#
+# Copyright (C) 2023 Masatake YAMATO <yamato@redhat.com>
+#
+# This file is part of util-linux.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+TS_TOPDIR="${0%/*}/../.."
+TS_DESC="TCP6 sockets"
+
+. "$TS_TOPDIR"/functions.sh
+ts_init "$*"
+
+ts_check_test_command "$TS_CMD_LSFD"
+ts_check_test_command "$TS_HELPER_MKFDS"
+ts_check_native_byteorder
+
+ts_cd "$TS_OUTDIR"
+
+PID=
+FDS=3
+FDC=4
+FDA=5
+EXPR='(TYPE == "TCPv6") and (FD >= 3) and (FD <= 5)'
+
+{
+ coproc MKFDS { "$TS_HELPER_MKFDS" tcp6 $FDS $FDC $FDA \
+ server-port=34567 \
+ client-port=23456 ; }
+ if read -r -u "${MKFDS[0]}" PID; then
+ ${TS_CMD_LSFD} -n \
+ -o ASSOC,TYPE,STTYPE,NAME,SOCK.STATE,SOCK.TYPE,SOCK.LISTENING,INET6.LADDR,INET6.RADDR,TCP.LADDR,TCP.LPORT,TCP.RADDR,TCP.RPORT \
+ -p "${PID}" -Q "${EXPR}"
+ echo 'ASSOC,TYPE,STTYPE,NAME,SOCK.STATE,SOCK.TYPE,SOCK.LISTENING,INET6.LADDR,INET6.RADDR,TCP.LADDR,TCP.LPORT,TCP.RADDR,TCP.RPORT': $?
+
+ kill -CONT "${PID}"
+ wait "${MKFDS_PID}"
+ fi
+} > "$TS_OUTPUT" 2>&1
+
+ts_finalize