How to Get the Link-Local IPv6 Address in Batch Script

@echo off
setlocal enabledelayedexpansion

echo [NET] Searching for IPv6 Link-Local Address...
echo.

set "IPV6="
set "AdapterCount=0"

:: The IPv6 address contains colons, so we CANNOT use colon as a delimiter
:: Instead, use "delims=" to capture the full line, then extract the address
for /f "delims=" %%L in ('ipconfig ^| findstr /i /c:"Link-local IPv6"') do (
    set "line=%%L"
    set /a AdapterCount+=1

    :: Extract everything after the last ": " (the address itself)
    :: Find the position of "fe80" in the line
    set "addr="
    for %%w in (!line!) do (
        echo %%w | findstr /i "fe80" >nul 2>&1
        if !errorlevel! equ 0 set "addr=%%w"
    )

    if defined addr (
        echo [FOUND] Adapter #!AdapterCount! - Link-Local: !addr!
        :: Keep the last one found (or change logic to keep first)
        set "IPV6=!addr!"
    )
)

echo.

if not defined IPV6 (
    echo [ERROR] No Link-Local IPv6 address found.
    echo        Possible causes:
    echo        - IPv6 is disabled on your network adapter
    echo        - No active network adapters
    echo.
    echo [TIP] Check adapter properties: ncpa.cpl
) else (
    echo [RESULT] Primary Link-Local IPv6: !IPV6!
)

pause
endlocal

@echo off
setlocal

echo [QUERY] Retrieving Link-Local IPv6 addresses per adapter...
echo.

powershell -NoProfile -Command ^
  "$addrs = Get-NetIPAddress -AddressFamily IPv6 -ErrorAction SilentlyContinue |"^
  "  Where-Object { $_.IPAddress -like 'fe80::*' -and $_.AddressState -eq 'Preferred' };"^
  ""^
  "if (-not $addrs) {"^
  "  Write-Host '[ERROR] No Link-Local IPv6 addresses found.';"^
  "  Write-Host '        IPv6 may be disabled on all adapters.';"^
  "  exit 1"^
  "};"^
  ""^
  "Write-Host ('  {0,-25} {1,-45} {2}' -f 'ADAPTER','LINK-LOCAL ADDRESS','ZONE ID');"^
  "Write-Host ('  ' + '-' * 80);"^
  ""^
  "foreach ($a in $addrs) {"^
  "  $ifAlias = (Get-NetAdapter -InterfaceIndex $a.InterfaceIndex -ErrorAction SilentlyContinue).Name;"^
  "  if (-not $ifAlias) { $ifAlias = 'Interface #' + $a.InterfaceIndex };"^
  "  $zoneId = $a.InterfaceIndex;"^
  "  Write-Host ('  {0,-25} {1,-45} %%{2}' -f $ifAlias, $a.IPAddress, $zoneId)"^
  "};"^
  ""^
  "Write-Host ('  ' + '-' * 80)"

pause
endlocal

@echo off
setlocal

set "IPV6="

:: Extract only fe80: addresses in Preferred state
for /f "delims=" %%a in ('powershell -NoProfile -Command ^
  "(Get-NetIPAddress -AddressFamily IPv6 -ErrorAction SilentlyContinue | Where-Object { $_.IPAddress -like 'fe80::*' -and $_.AddressState -eq 'Preferred' } | Select-Object -First 1).IPAddress"') do set "IPV6=%%a"

if not defined IPV6 (
    echo [ERROR] No Link-Local IPv6 address found.
) else (
    echo Link-Local IPv6: %IPV6%
)

pause
endlocal

@echo off
setlocal

echo [AUDIT] Complete IPv6 Address Report
echo        %COMPUTERNAME% - %date% %time%
echo.

powershell -NoProfile -Command ^
  "$all = Get-NetIPAddress -AddressFamily IPv6 -ErrorAction SilentlyContinue;"^
  "if (-not $all) { Write-Host '[ERROR] No IPv6 addresses found.'; exit 1 };"^
  ""^
  "$linkLocal = $all | Where-Object { $_.IPAddress -like 'fe80::*' };"^
  "$global    = $all | Where-Object { $_.IPAddress -match '^2[0-9a-f]{3}:' };"^
  "$loopback  = $all | Where-Object { $_.IPAddress -eq '::1' };"^
  "$temporary = $all | Where-Object { $_.IPAddress -like 'fd*' -or ($_.SuffixOrigin -eq 'Random') };"^
  ""^
  "Write-Host '  === LINK-LOCAL (fe80::) ===';"^
  "if ($linkLocal) {"^
  "  foreach ($a in $linkLocal) {"^
  "    $if = (Get-NetAdapter -InterfaceIndex $a.InterfaceIndex -EA SilentlyContinue).Name;"^
  "    Write-Host ('    {0,-20} {1}' -f $if, $a.IPAddress)"^
  "  }"^
  "} else { Write-Host '    None found' };"^
  ""^
  "Write-Host '';"^
  "Write-Host '  === GLOBAL (Routable) ===';"^
  "if ($global) {"^
  "  foreach ($a in $global) {"^
  "    $if = (Get-NetAdapter -InterfaceIndex $a.InterfaceIndex -EA SilentlyContinue).Name;"^
  "    $state = $a.AddressState;"^
  "    Write-Host ('    {0,-20} {1}  [{2}]' -f $if, $a.IPAddress, $state)"^
  "  }"^
  "} else { Write-Host '    None - ISP may not support IPv6' };"^
  ""^
  "Write-Host '';"^
  "Write-Host '  === TEMPORARY (Privacy) ===';"^
  "if ($temporary) {"^
  "  foreach ($a in $temporary) {"^
  "    Write-Host ('    {0}  [Valid: {1}h]' -f $a.IPAddress, [math]::Round($a.ValidLifetime.TotalHours,1))"^
  "  }"^
  "} else { Write-Host '    None active' };"^
  ""^
  "Write-Host '';"^
  "Write-Host ('  Total IPv6 addresses: ' + $all.Count)"

pause
endlocal

:: WRONG - "tokens=2 delims=:" captures only "fe80" (before the first colon)
for /f "tokens=2 delims=:" %%a in ('ipconfig | findstr "Link-local"') do set "IPV6=%%a"

for /f "delims=" %%L in ('ipconfig ^| findstr /i "Link-local"') do (
    :: Parse the full line to find the fe80: address
)

Get-NetIPAddress -AddressFamily IPv6 | Where-Object { $_.IPAddress -like 'fe80::*' }

ping fe80::1a2b:3c4d:5e6f:7890%%12