net_len = pow(2, net_bits - net.prefixlen)
start, end = int(net_len / 4 * 3), net_len
if net_len > 2000:
  start, end = 1000, 2000

[print(str(ip) + "/" + str(ip.max_prefixlen)) for ip in islice(ip_network('$CIDR').hosts(), start, end)]
EOF
}

function ips_to_cidrs() {
  IP_RANGE_START="$1"
  IP_RANGE_END="$2"
  python3 - <<EOF
from ipaddress import summarize_address_range, IPv4Address

  TRACEPARENT="00-${tid}-${sid}-01" "${@:2}"
  local result="$?"
  { set +x; } 2>/dev/null

  local end
  end="$(date -u +%s.%N)"

  # Now report this span. We override the IDs to the ones we set before.
  otel-cli span \
    --service "${BASH_SOURCE[-1]}" \
    --name "$1" \
    --start "$start" \
    --end "$end" \
    --force-trace-id "$tid" \
    --force-span-id "$sid" \
    --attrs "$(_genattrs)"