#!/bin/bash# SPDX-License-Identifier: GPL-2.0 source lib.shset -o pipefail NSIM_ADDR=2025TEST_ADDR="d0:be:d0:be:d0:00" RET_CODE=0 cleanup() {    cleanup_netdevsim "$NSIM_ADDR"    cleanup_ns "$NS"} trap cleanup EXIT fail() {    echo "ERROR: ${1:-unexpected return code} (ret: $_)" >&2    RET_CODE=1} get_addr(){    local type="$1"    local dev="$2"    local ns="$3"     ip -j -n "$ns" link show dev "$dev" | jq -er ".[0].$type"} setup_ns NS nsim=$(create_netdevsim $NSIM_ADDR "$NS") get_addr address "$nsim" "$NS" >/dev/null || fail "Couldn't get ether addr"get_addr broadcast "$nsim" "$NS" >/dev/null || fail "Couldn't get brd addr"get_addr permaddr "$nsim" "$NS" >/dev/null && fail "Found perm_addr without setting it" ip -n "$NS" link set dev "$nsim" address "$TEST_ADDR"ip -n "$NS" link set dev "$nsim" brd "$TEST_ADDR" [[ "$(get_addr address "$nsim" "$NS")" == "$TEST_ADDR" ]] || fail "Couldn't set ether addr"[[ "$(get_addr broadcast "$nsim" "$NS")" == "$TEST_ADDR" ]] || fail "Couldn't set brd addr" if create_netdevsim_port "$NSIM_ADDR" "$NS" 2 "FF:FF:FF:FF:FF:FF" 2>/dev/null; then    fail "Created netdevsim with broadcast permaddr"fi nsim_port=$(create_netdevsim_port "$NSIM_ADDR" "$NS" 2 "$TEST_ADDR") get_addr address "$nsim_port" "$NS" >/dev/null || fail "Couldn't get ether addr"get_addr broadcast "$nsim_port" "$NS" >/dev/null || fail "Couldn't get brd addr"[[ "$(get_addr permaddr "$nsim_port" "$NS")" == "$TEST_ADDR" ]] || fail "Couldn't get permaddr" cleanup_netdevsim "$NSIM_ADDR" "$NS" exit $RET_CODE