XIU2/CloudflareSpeedTest · warning

Failed to get the preferred IPv6 address.

Error message

Failed to get the preferred IPv6 address.

What it means

The IPv6 mirror of the IPv4 branch: cfst_dnspod.sh runs ./cfst -f ipv6.txt -n 500 -o result6.csv (line 79), reads preferred_ipv6=$(awk -F, 'NR==2 {print $1}' result6.csv) (line 82), and at line 86 prints this message when it is empty, skipping AAAA record lookup/create/update. The script then ends normally.

Source

Thrown at script/cfst_dnspod.sh:86

    # 创建 IPv4 记录
    new_ipv4_record_id=$(create_dns_record "A" "$preferred_ipv4")
    if [ -n "$new_ipv4_record_id" ]; then
      echo "Created DNSPod record with IPv4: $preferred_ipv4"
    else
      echo "Failed to create DNSPod record with IPv4."
    fi
  fi
fi

# 运行 CFST v6
./cfst -f ipv6.txt -n 500 -o result6.csv

# 读取 CSV 文件并提取优选 IPv6 地址
preferred_ipv6=$(awk -F, 'NR==2 {print $1}' result6.csv)

# 检查是否获取到了 IPv6 地址
if [ -z "$preferred_ipv6" ]; then
  echo "Failed to get the preferred IPv6 address."
else
  echo "BETTER IPv6: $preferred_ipv6"

  # 获取 IPv6 记录 ID
  ipv6_record_id=$(get_record_id "AAAA")

  if [ -n "$ipv6_record_id" ]; then
    # 更新 IPv6 记录
    update_dns_record "$ipv6_record_id" "AAAA" "$preferred_ipv6"
    echo "Updated DNSPod record with IPv6: $preferred_ipv6"
  else
    # 创建 IPv6 记录
    new_ipv6_record_id=$(create_dns_record "AAAA" "$preferred_ipv6")
    if [ -n "$new_ipv6_record_id" ]; then
      echo "Created DNSPod record with IPv6: $preferred_ipv6"
    else
      echo "Failed to create DNSPod record with IPv6."
    fi

View on GitHub (pinned to 1da0c025d7)

Solutions

1. Confirm ipv6.txt exists next to the script and cfst, then run ./cfst -f ipv6.txt -n 500 -o result6.csv manually to see the real output
2. If the host has no IPv6 route, treat this as informational or delete the IPv6 block (lines 78-106) — the IPv4 update already completed
3. Verify IPv6 connectivity: ping -6 2606:4700:4700::1111; relax -n/-t filters if tests fail marginally
4. Guard the parse: [ -s result6.csv ] && [ $(wc -l < result6.csv) -ge 2 ] || preferred_ipv6=''

Example fix

# script/cfst_dnspod.sh (before)
preferred_ipv6=$(awk -F, 'NR==2 {print $1}' result6.csv)
# (after)
if [ -f ipv6.txt ] && [ -s result6.csv ] && [ "$(wc -l < result6.csv)" -ge 2 ]; then
  preferred_ipv6=$(awk -F, 'NR==2 {print $1}' result6.csv)
else
  preferred_ipv6=''
fi

[ -x ./cfst ] && [ -f ipv6.txt ] || { echo 'cfst/ipv6.txt missing' >&2; exit 1; }
ping -c1 -6 2606:4700:4700::1111 >/dev/null 2>&1 || echo 'no IPv6 connectivity — AAAA update will be skipped' >&2

is_ipv6(){ [[ $1 =~ ^([0-9a-fA-F]{0,4}:){2,7}[0-9a-fA-F]{0,4}$ ]]; }
is_ipv6 "$preferred_ipv6" || echo 'preferred_ipv6 not valid' >&2

When it happens

Trigger: result6.csv missing because ./cfst -f ipv6.txt never ran (ipv6.txt not in the working directory — the repo ships it at the root, but deployments often copy only ip.txt) or cfst exited early; the host has no IPv6 connectivity so no IPv6 target passes; -n 500 larger than ipv6.txt's entry count; header-only CSV.

Common situations: Running on an IPv4-only VPS/home network where every IPv6 test fails; executing from a directory lacking ipv6.txt; the user never intended IPv6 but the script unconditionally attempts it, so the message is expected noise.

Related errors

• Failed to get the preferred IPv4 address.
• Failed to create DNSPod record with IPv6.
• [错误] 缺少配置项 [TYPE] !
• [错误] 缺少配置项 [NAME] !
• [错误] 缺少配置项 [TTL] !

AI-assisted analysis of XIU2/CloudflareSpeedTest@1da0c025d7 (2026-08-15). Data as JSON: /api/errors/8714bd293e7de859. Report an issue: GitHub.