1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4NS="ns-peer-$(mktemp -u XXXXXX)" 5 6ip netns add "${NS}" 7ip -netns "${NS}" link set lo up 8ip -netns "${NS}" route add default via 127.0.0.2 dev lo 9 10tc -n "${NS}" qdisc add dev lo ingress 11tc -n "${NS}" filter add dev lo ingress prio 4 protocol ip \ 12 bpf object-file nat6to4.bpf.o section schedcls/egress4/snat4 direct-action 13 14ip netns exec "${NS}" \ 15 bash -c 'echo 012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789abc | socat - UDP4-DATAGRAM:224.1.0.1:6666,ip-multicast-loop=1' 16