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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
NR_FILES=32768
readonly NETNS="ns-$(mktemp -u XXXXXX)"
# default values
port=443
addr_v6="2001:0db8:0:f101::1"
addr_v4="10.8.8.8"
use_v6=true
addr=""
usage() {
echo "Usage: $0 [-6 | -4] [-p port] [-a address]"
echo -e "\t6: use ipv6"
echo -e "\t4: use ipv4"
echo -e "\tport: Port number"
echo -e "\taddress: ip address"
}
while getopts "ha:p:64" opt; do
case ${opt} in
h)
usage $0
exit 0
;;
a) addr=$OPTARG;;
p)
port=$OPTARG;;
6)
use_v6=true;;
4)
use_v6=false;;
esac
done
setup() {
ip netns add "${NETNS}"
ip -netns "${NETNS}" link add veth0 type veth peer name veth1
ip -netns "${NETNS}" link set lo up
ip -netns "${NETNS}" link set veth0 up
ip -netns "${NETNS}" link set veth1 up
if [[ "$use_v6" == true ]]; then
ip -netns "${NETNS}" addr add $addr_v6 nodad dev veth0
else
ip -netns "${NETNS}" addr add $addr_v4 dev lo
fi
}
cleanup() {
ip netns del "${NETNS}"
}
if [[ "$addr" != "" ]]; then
addr_v4=$addr;
addr_v6=$addr;
fi
setup
if [[ "$use_v6" == true ]] ; then
ip netns exec "${NETNS}" sh -c \
"ulimit -n ${NR_FILES};./bind_bhash ${port} ipv6 ${addr_v6}"
else
ip netns exec "${NETNS}" sh -c \
"ulimit -n ${NR_FILES};./bind_bhash ${port} ipv4 ${addr_v4}"
fi
cleanup