monitor_bandwidth_test.sh
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monitor_bandwidth_test.sh
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	#!/bin/sh
	#
	# Copyright (C) 2020 VyOS maintainers and contributors
	#
	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License version 2 or later as
	# published by the Free Software Foundation.
	#
	# This program 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.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program. If not, see <http://www.gnu.org/licenses/>.

	if ipaddrcheck --is-ipv6 $1; then
	# Set address family to IPv6 when an IPv6 address was specified
	OPT="-V"
	elif [[ $(dig $1 AAAA +short \| grep -v '\.$' \| wc -l) -gt 0 ]]; then
	# CNAME is also part of the dig answer thus we must remove any
	# CNAME response and only shot the AAAA response(s), this is done
	# by grep -v '\.$'

	# Set address family to IPv6 when FQDN has at least one AAAA record
	OPT="-V"
	else
	# It's not IPv6, no option needed
	OPT=""
	fi

	/usr/bin/iperf $OPT -c $1 $2